Add recipes for just

[adierkens]

just has come about as one of the more popular ways of organizing project specific scripts. Given the multi-language and hard-to-find nature of bazel targets, this gives us a clean way of saving and reusing scripts for users.

> just -l                                                                                                                                                                

Available recipes:
    build-all       # Build all targets in the project
    build-core      # Build all core JS/TS files
    build-js        # Build all JS/TS files
    dev-ios         # Generate and open the xcodeproj for Player
    lint-js         # Lint all JS/TS files
    mvn-install     # Install all generated artifacts into the system .m2 repository
    maven-install   # alias for `mvn-install`
    start-docs      # Run a dev server of the main docs page
    start-ios-demo  # Build and run the iOS demo app in a simulator
    start-storybook # Run a dev server of storybook
    test-all        # Test targets in the project
    test-core       # Test all core JS/TS files
    test-js         # Test all JS/TS files

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 91.94%. Comparing base (7e8ca9c) to head (f8e3f88). Report is 155 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #468 +/- ## ======================================= Coverage 91.94% 91.94% ======================================= Files 340 340 Lines 26838 26838 Branches 1946 1946 ======================================= + Hits 24675 24677 +2 + Misses 2149 2147 -2 Partials 14 14 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.