* add some tips
* refactoring and max tip index
* add config to disable release notes and startup tips
* allow dismissing startup tips from plugin
* random tip at startup
* custom launch about
* fix tests
* style(fmt): rustfmt
* basic about screen
* work
* finish implementing about plugin except theme spec
* show about plugin only on first version run
* some cleanups and do the right thing with open/xdg-open
* refactor: make ui framework
* refactor: remove old stuff
* refactor: about plugin
* style(fmt): rustfmt
* chore(repo): about plugin asset
* fix tests
* style(fmt): rustfmt!!
