Update contribution guidelines

[freimair]

This is another step towards a more streamlined reviewing process and making better use of the resources we have. These changes are largely based on a recent maintainers call.

Key points of the re-design:

• added a "Are you the guy?" section. Let people know up front what they can expect.
• added a "getting started" section. Link (updated) communication channels, describe how to get going.
• refactored the rest:
  • refined some parts in order to make them more clear
  • added bits that might streamline the maintenance process of Bisq (testing, PR ttl, further reading)

Once this gets approved, I will schedule a dev-call on this very topic to get into the points a little more.

[ripcurlx]

@cbeams Would be great to get your input on this, especially as a native speaker 😄

[ripcurlx]

Concept ACK

I think the content we want to have in is there, but I'd like for more regular contributors to respond as this is a bigger change in our PR process as well.

@sqrrm @cbeams @julianknutsen @wiz @devinbileck @chimp1984

[julianknutsen]

Small comments inline. I tried not to go too far in the weeds with the feedback I've already shared with my onboarding experience. Happy to take another look for more structure/grammar issues once a few more people weigh in.

[devinbileck]

Overall this seems like good content to include and I agree with the feedback provided thus far. Some of the wording and terminology could be improved. @m52go would you be able to have a look at this?

[freimair]

that is a first. Changing the CONTIBUTING.md broke the build with jdk12. Does master still build?

[cbeams]

@freimair, I just had a moment to review this today, so haven't done a comprehensive job. If you can fold in the current batch of feedback, I'll commit to giving the doc a proper editing pass when you're done.

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[freimair]

will do

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This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

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This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

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This issue has been automatically closed because of inactivity. Feel free to reopen it if you think it is still relevant.