Missing azd command in README.md

[faynef]

Description:
The README.md is missing the azd auth login and azd init -t Azure-Samples/remote-mcp-apim-functions-python commands, as follows:

Suggestion:
Add azd auth login and azd init -t Azure-Samples/remote-mcp-apim-functions-python commands to README.md.

@annaji-msft and @hemarina for notification.