Tonic Structural release notes

Added global permission validation for the following API endpoints:

• GET api/environment/settings

• GET api/environment/settings/environment_overrides

• GET api/external-secrets-managers

Added the following new API endpoints that include workspace permission validation:

• GET api/workspace/{workspaceId}/environment/settings

• GET api/workspace/{workspaceId}/environment/settings/environment_overrides

• GET api/workspace/{workspaceId}/external-secrets-managers