Custom skills and instructions on module level

[petarvukmirovic]

• Updated documentation on custom skills to include support for modules
• Added agent instructions documentation

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
2 out of 3 committers have signed the CLA.

✅ MariaShaposhnikova
✅ petarvukmirovic
❌ Petar Vukmirovic

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[KONRADS098]

@quinntracy FYI this is still being reviewed internally, we'll let you know once it is ready.

[MariaShaposhnikova]

@KONRADS098 , I have done a language review. Please let us know when the internal review is done.

[MariaShaposhnikova]

@petarvukmirovic, could I ask you to sign CLA please? This only needs to be signed once.

[KONRADS098]

@KONRADS098 , I have done a language review. Please let us know when the internal review is done.

@MariaShaposhnikova Thanks for the review, our internal review is done 😃