[18.0][OU-ADD] account

[MiquelRForgeFlow]

Depends on:

• [ADD] add_column: split from add_fields openupgradelib#412

Depends on :

• product : [18.0][OU-ADD] product #4839
• analytic : [18.0][OU-ADD] analytic #4841
• onboarding : [18.0][OU-ADD] onboarding #4944
• portal : [18.0][OU-ADD] portal #4949
• digest : [18.0][OU-ADD] digest #4950

[MiquelRForgeFlow]

/ocabot migration account

[rvalyi]

For reference, here are the 4 key breaking changes PR and 2 main features PR for the account module in for the v18 migration:
https://github.com/akretion/odoo-module-diff-analysis/tree/main/18.0/account

[hbrunn]

I looked into this before my vacation and got stuck on figuring out if we need to merge accounts based on their code for multiple companies with the same localization and maybe other properties. Any opinion on that?

Review is partial up to now.

[hbrunn]

@MiquelRForgeFlow I'll be pushing a couple of suggestions to ForgeFlow#25