Add support for Emit and Loggers and more...

[daidokoro]

This PR adds the follow:

• [Feat] add emit funciton to starlark processor
• [Feat] added log module to starlark processor
• [Feat] added entrypoint option to starlark config, allowing to specify the entry point of the starlark script/code
• [Fix] json.decode no longer required to load telemetry events in starlark processor

commits:

• README updated
• added entrypoint option to config
• fixed config test
• removed uneeded packages
• added entrypoint option to factories
• added modules for emit and log functions
• modified processors to support emit and log functionlity and removed the need to use the json.decode to load telemetry events
• added github workflows for testing and checking changelog
• added starlark graph
• changelog