Add dispatcher for keyboard shortcuts

[gaul]

References #1978.

Pull Request checklist

• [ ] Quality: This PR builds and passes detekt/ktlint checks (A pre-push hook is recommended)
• [ ] Tests: This PR includes thorough tests or an explanation of why it does not
• [ ] Changelog: This PR includes a changelog entry or does not need one
• [ ] Accessibility: The code in this PR follows accessibility best practices or does not include any user facing features

After merge

• Milestone: Make sure issues closed by this pull request are added to the milestone of the version currently in development.
• Breaking Changes: If this is a breaking change, please push a draft PR on Reference Browser to address the breaking issues.

This is more of a proof-of-concept to show interest and ask for help. @samlh @pocmo could you give me guidance on how this might be implemented in a more extensible way? I understand that this should be sending these events to the embedding application so it can call things like components.useCases.sessionUseCases.reload() but I'm not sure where to start.

[codecov[bot]]

Codecov Report

Merging #9948 (97b802f) into master (055736c) will decrease coverage by 8.37%. The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #9948      +/-   ##
============================================
- Coverage     74.00%   65.63%   -8.38%     
+ Complexity     5665      269    -5396     
============================================
  Files           778       94     -684     
  Lines         28831     2258   -26573     
  Branches       4741      363    -4378     
============================================
- Hits          21337     1482   -19855     
+ Misses         5013      618    -4395     
+ Partials       2481      158    -2323     

Impacted Files	Coverage Δ	Complexity Δ
...main/java/mozilla/components/service/fxa/Config.kt
...omponents/feature/prompts/provider/FileProvider.kt
...owser/session/engine/middleware/CrashMiddleware.kt
...s/browser/icons/processor/AdaptiveIconProcessor.kt
...ponents/browser/icons/preparer/DiskIconPreparer.kt
...ents/browser/session/ext/BrowserStoreExtensions.kt
...illa/components/feature/prompts/PromptContainer.kt
...ava/mozilla/components/browser/menu/BrowserMenu.kt
...va/mozilla/components/service/fxa/manager/State.kt
...n/java/mozilla/components/service/pocket/Logger.kt
... and 674 more

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[mergify[bot]]

This pull request has conflicts when rebasing. Could you fix it @gaul? 🙏

[mergify[bot]]

This pull request has conflicts when rebasing. Could you fix it @gaul? 🙏