chore: Adding MCP decorators

[gavin-aguiar]

Added new decorators for mcp extensions

Sample code:

@app.mcp_tool_trigger(
    arg_name="context",
    type="mcpToolTrigger",
    tool_name="hello_mcp",
    description="Hello world.",
    toolProperties="[]",
)
def hello_mcp(context) -> None:
    return "Hello I am MCPTool!"

[swapnil-nagar]

How this toolProperties will support the PropertyeName, PropertyValue, Required parameter?

[gavin-aguiar]

Similar to https://github.com/Azure-Samples/remote-mcp-functions-python/blob/main/src/function_app.py#L14

User defines a ToolProperty and that is assigned to this tool_properties