feat(hover): add missing descriptions for older json schema drafts

[adityayadav-dev]

Summary

Adds missing hover tooltip descriptions for several keywords in draft-04, draft-06, and draft-07 that were previously left blank or missing. Also uncomments the corresponding test assertions that were marked as TODO.

Closes #256

Changes

language-server/src/features/hover.js

draft-04 — filled in empty descriptions for:

• id — identifier for the schema resource
• dependencies — rules evaluated when an object contains a certain property
• exclusiveMaximum — strict less-than validation (boolean form in draft-04)
• exclusiveMinimum — strict greater-than validation (boolean form in draft-04)
• maximum — less-than-or-equal validation
• minimum — greater-than-or-equal validation

draft-06 — added new entries for:

• $id — identifier for the schema resource
• dependencies — rules evaluated when an object contains a certain property

draft-07 — added new entries for:

• $id — identifier for the schema resource
• dependencies — rules evaluated when an object contains a certain property

language-server/src/features/hover.test.ts

Uncommented all TODO test assertions so the previously skipped keywords are now regression-tested:

• draft-07: $id, dependencies
• draft-06: $id, dependencies
• draft-04: id, maximum, exclusiveMaximum, minimum, exclusiveMinimum, dependencies

Testing

All 5768 tests pass (24 test files), including the newly enabled hover assertions for all three drafts.

[adityayadav-dev]

Hey @jdesrosiers , I have made the changes. Please take a look when you have time. Thanks!