CodeGen from PR 21803 in Azure/azure-rest-api-specs

 Review request for Microsoft.DBforPostgreSQL Flexible server to add version stable/2022-12-01 (#21803)

* Adds base for updating Microsoft.DBforPostgreSQL from version preview/2022-03-08-preview to version 2022-12-01

* Updates readme

* Updates API version in new specs and examples

* Fix readme file for new api version change

* Move common-types.json to types folder under postgresql/resource-manager

* Fix path for common-types.json

* Introduced new enum properties for authConfig object instead of previously used enums, based on ARM feedback on earlier 2022-03-08-preview api version PR

* Add LroLocationHeaders for 202 calls

* Updated readme files for go, python and typescript to include new ga api version 2022-12-01

* Multi api version for PG flexible server to inlude 2022-12-01 ga api version

* remove 2022-1201- from multi api in readme.md file

* Update readme files to keep 2022-12-01 ga api version as default version

* Revert changes done to readme.go.md

Author: SDKAuto