[Modules] SynapseWorkspaces add workspaceRepositoryConfiguration property

[ghost]

Description

added a parameter to the synapse workspace to add GIT configuration
#3092

Type of Change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

Checklist

• [v] I'm sure there are no other open Pull Requests for the same update/change
• [?] My corresponding pipelines / checks run clean and green without any errors or warnings
• [v] My code follows the style guidelines of this project
• [v] I have commented my code, particularly in hard-to-understand areas
• [v] I have made corresponding changes to the documentation (readme)
• [v] I did format my code

[ghost]

@microsoft-github-policy-service agree

[ghost]

docs are also created

[eriqua]

🆗