feat(postgresflex): migrate to V2 api

[SerseusWasTaken]

Description

Migrates postgresflex to the v2 API

relates to STACKITCLI-374

Checklist

• Issue was linked above
• Code format was applied: make fmt
• Examples were added / adjusted (see e.g. here)
• Docs are up-to-date: make generate-docs (will be checked by CI)
• Unit tests got implemented or updated
• Unit tests are passing: make test (will be checked by CI)
• No linter issues: make lint (will be checked by CI)

[github-actions]

Merging this branch changes the coverage (2 decrease, 5 increase)

Impacted Packages	Coverage Δ	🤖
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/backup/describe	68.09% (-0.80%)	👎
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/backup/list	60.38% (+5.66%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/backup/update-schedule	40.00% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/clone	59.74% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/create	60.00% (+0.40%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/delete	31.94% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/describe	79.69% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/list	58.33% (+6.25%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/update	65.12% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/options	58.24% (+1.25%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/create	59.18% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/delete	37.50% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/describe	69.05% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/list	60.00% (+6.00%)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/reset-password	50.00% (ø)
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/update	44.44% (ø)
github.com/stackitcloud/stackit-cli/internal/pkg/services/postgresflex/client	0.00% (ø)
github.com/stackitcloud/stackit-cli/internal/pkg/services/postgresflex/utils	82.09% (-0.26%)	👎

---

Coverage by file

Changed files (no unit tests)

Changed File	Coverage Δ	Total	Covered	Missed	🤖
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/backup/describe/describe.go	68.09% (-0.80%)	47 (+2)	32 (+1)	15 (+1)	👎
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/backup/list/list.go	60.38% (+5.66%)	53	32 (+3)	21 (-3)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/backup/update-schedule/update_schedule.go	40.00% (ø)	35	14	21
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/clone/clone.go	59.74% (ø)	77	46	31
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/create/create.go	60.00% (+0.40%)	100 (+1)	60 (+1)	40	👍
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/delete/delete.go	31.94% (ø)	72	23	49
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/describe/describe.go	79.69% (ø)	64	51	13
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/list/list.go	58.33% (+6.25%)	48	28 (+3)	20 (-3)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/update/update.go	65.12% (ø)	129	84	45
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/options/options.go	58.24% (+1.25%)	91 (-2)	53	38 (-2)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/create/create.go	59.18% (ø)	49	29	20
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/delete/delete.go	37.50% (ø)	40	15	25
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/describe/describe.go	69.05% (ø)	42	29	13
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/list/list.go	60.00% (+6.00%)	50	30 (+3)	20 (-3)	👍
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/reset-password/reset_password.go	50.00% (ø)	48	24	24
github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/update/update.go	44.44% (ø)	45	20	25
github.com/stackitcloud/stackit-cli/internal/pkg/services/postgresflex/client/client.go	0.00% (ø)	1	0	1
github.com/stackitcloud/stackit-cli/internal/pkg/services/postgresflex/utils/utils.go	82.09% (-0.26%)	67 (-1)	55 (-1)	12	👎

Please note that the "Total", "Covered", and "Missed" counts above refer to code statements instead of lines of code. The value in brackets refers to the test coverage of that file in the old version of the code.

Changed unit test files

• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/backup/describe/describe_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/backup/list/list_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/backup/update-schedule/update_schedule_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/clone/clone_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/create/create_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/delete/delete_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/describe/describe_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/list/list_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/instance/update/update_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/options/options_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/create/create_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/delete/delete_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/describe/describe_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/list/list_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/reset-password/reset_password_test.go
• github.com/stackitcloud/stackit-cli/internal/cmd/postgresflex/user/update/update_test.go
• github.com/stackitcloud/stackit-cli/internal/pkg/services/postgresflex/utils/utils_test.go