Feat/wpb 23880 add community features

[MarianKijewski]

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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What's new in this PR?

Issues

No structured form for external developers using SDK to reach out for support or feature requests.

Solutions

Add two pages which explain how to ask for help using Github issues and where to send feature requests.

Needs releases with:

• feat: WPB-23880 Update issue templates wire-apps-jvm-sdk#323

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[bbaarriiss]

some questions/ideas commented

[bbaarriiss]

LGTM, thanks.