Validate SCIM functionality against documentation

[matthewelwell]

Manually validate that the SCIM functionality works as per documentation in this PR.

Side quest: Hook Flagsmith oragnisation up to Google SSO with SCIM.

[khvn26]

Side quest: Hook Flagsmith oragnisation up to Google SSO with SCIM.

Impossible due to Google only supporting a curated vendor list for SCIM.

[khvn26]

User sync Confirmed to work w/ Entra ID.

[khvn26]

Group sync confirmed to work w/ Entra ID.