Add branch handling to Git tools in server.py

Implemented functionality to retrieve branch information based on specified criteria, enhancing the Git tools available in the server. This includes support for local and remote branches, as well as filtering by commit containment.

Author: mohamedamineberguiga-stack

src/git/src/mcp_server_git/server.py

@@ -505,7 +505,19 @@ async def call_tool(name: str, arguments: dict) -> list[TextContent]:
                     type="text",
                     text="Commit history:\n" + "\n".join(log)
                 )]
-
+            
+            case GitTools.BRANCH:
+                result = git_branch(
+                    repo,
+                    arguments.get("branch_type", 'local'),
+                    arguments.get("contains", None),
+                    arguments.get("not_contains", None),
+                )
+                return [TextContent(
+                    type="text",
+                    text=result
+                )]
+            
             case _:
                 raise ValueError(f"Unknown tool: {name}")