Add UI Prototype from Paul's repository

Closes #10 (closed)

added P: high S: in progress Sponsor 7 labels

I fear we'll need a bit of rebasing after !3 (closed) is merged...

added 3 commits

• f3c65eb6 - Add ktLint plugin and add IDEA task for running it
• d31c93d0 - Add project-specific code style settings
• c8849109 - Make code comply with Kotlin style guide

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added 1 commit

• 7c148b43 - Fix case of some variables in BriarUIStateManager

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added 1 commit

• c1579791 - List contacts after singning in and print to stdout

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I added some code now that lists the contacts after successful sign in.

I suggest we leave it at that for now and work on wiring real briar contact list and message data up with the UI in a separate MR. With the number of people working here, I think it's good to keep chunks of work relatively small at the moment in order to not get blocked on other tasks and avoid heavy rebasing.

@sebkur Merging this now once it's reviewed sounds good to me

I renamed the issue that this MR solves. Let's follow up with the next steps in #27 (closed)

mentioned in merge request !3 (closed)

added 1 commit

• 78ce7037 - Fix case of a few method parameters

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