Add `providerScopes` and `oauthTokens` support to SSO API (#1345)

## Summary
- Add `providerScopes` parameter to SSO authorization URL options
- Add `oauthTokens` field to SSO profile and token responses
- Comprehensive test coverage for new functionality

## Changes Made
- Updated `SSOAuthorizationURLOptions` interface to include optional
`providerScopes` parameter
- Modified `getAuthorizationUrl` method to serialize provider scopes as
space-separated string
- Added `oauthTokens` field to `ProfileAndToken` and
`ProfileAndTokenResponse` interfaces
- Updated profile and token serializer to handle oauth tokens
deserialization
- Added tests for provider scopes in authorization URLs
- Added tests for oauth tokens in profile responses

## Test Plan
- [x] All existing tests pass
- [x] New tests added for provider scopes functionality
- [x] New tests added for oauth tokens functionality
- [x] Linter passes
- [x] TypeScript compilation successful

Related to ENT-3768