chore(core): adds github as a property for tob level access to repo operator (#485)

# Motivation

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# Content

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# Testing

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# Please check the following before marking your PR as ready for review

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---------

Co-authored-by: kopekC <[email protected]>

Author: kopekC

src/codegen/sdk/core/codebase.py

@@ -210,6 +210,20 @@ def __rich_repr__(self) -> rich.repr.Result:
     def op(self) -> RepoOperator:
         return self._op
 
+    @property
+    def github(self) -> RepoOperator:
+        """Access GitHub operations through the repo operator.
+
+        This property provides access to GitHub operations like creating PRs,
+        working with branches, commenting on PRs, etc. The implementation is built
+        on top of PyGitHub (python-github library) and provides a simplified interface
+        for common GitHub operations.
+
+        Returns:
+            RepoOperator: The repo operator instance that handles GitHub operations.
+        """
+        return self._op
+
     ####################################################################################################################
     # SIMPLE META
     ####################################################################################################################