Make collectors/COLLECTORS.md have its list autogenerated from integrations.js

[Ancairon]

Summary

This script reads the integrations/integrations.js file and generates the list of data collection integrations inside collectors/COLLECTORS.md, with proper links that Learn can replace into Learn links.

Due to the string replacements the script does, I have ran it once in this PR, to change the top header (that it looks to split every time) to the desired one.

@Ferroin please check the script and the action addition
@sashwathn please check the outcome in the markdown file

[Ferroin]

Workflow looks good. Left some suggestions for the Python code.

[ilyam8]

I think we should add it to the integration workflow. I find it weird to merge 2 PRs instead of 1 when they are totally related.

[Ancairon]

Well, they are not entirely related, one generates the file and the other is one piece that utilizes the js file.

Like one is making something that is used by everyone, while the other is responsible for generating documentation out of it 🤔

[Ferroin]

I would tend to agree with Ilya on having it be one PR instead of more than one.

We can simply add a step to the existing workflow to run this script after the new integrations.js file is generated.

[ilyam8]

one generates the file and the other is one piece that utilizes the js file

one generates the file and
the other uses this file to generate docs

not entirely related

wait what

1st always triggers 2nd, I think those changes should be in one PR.

[Ancairon]

Thanks for the feedback, I added the steps from the action file I had made to the existing action for integrations

[Ancairon]

found a small bug, gonna push a new commit to fix and re-request approvals, parentheses in the links should not be there, but simple fix