feat: Add support for invoke local

[CorentinDoue]

This pull request adds the implementation of the command invoke local for the google provider. It's inspired by the AWS implementation to keep the behaviors as close as possible.

The command is available for the nodejs runtimes and events of type event

Tests

• [x] Units
• [x] e2e with ES5 JS
• [x] e2e with compiled JS/TS with webpack (the shortcuts of the options are not supported cf https://github.com/serverless/serverless/issues/9452) PR merged to fix it: https://github.com/serverless-heaven/serverless-webpack/pull/834
• [x] e2e with compiled JS/TS with esbuild

Next steps

• Add support for http events

[CorentinDoue]

The failing test is caused by an unsupported for await by node 8. But node 8 is no more supported since https://github.com/serverless/serverless-google-cloudfunctions/releases/tag/v4.0.0

@pgrzesik could you remove the test with node8?

[CorentinDoue]

@pgrzesik can you review it?

[pgrzesik]

Hello @CorentinDoue - sorry for the delay here - I'm a bit swamped with other prorities and I'm not that familiar with this plugin's codebase, but I'll try to review it as soon as possible. Thanks for your patience :bow:

[CorentinDoue]

@pgrzesik I corrected or answered your remarks. It's ready for a new review