This commit changes our linter/formatter to biome (https://biomejs.dev/)
Causing our prehook to run almost instantly, and our "yarn lint" task to
run in sub 100ms.
Some trade-offs:
* Biome isn't quite as well established as ESLint
* Are we ready to install a different vscode plugin (the biome plugin)
instead of the prettier plugin
The configuration set for biome also has a set of recommended rules,
this is turned on by default, in order to get to something that was
mergeable I have turned off a couple the rules we seemed to violate the
most, that we also explicitly told eslint to ignore.
This PR adds potentially stale events as available to all addons and
adds a formatted message.
## Discussion
I'd still be interested in hearing input on whether the event type
should be selectable by addons or not before we start emitting the
event. I'm leaning towards "yes", but I'll take your thoughts into
consideration.
## About the changes
Adds more specifics to addon notifications when a flexibleRollout is
updated.
- [x] Specific text for all strategy types
- [x] Add constraint differences for all strategy types
<!-- Does it close an issue? Multiple? -->
Closes [#3140](https://github.com/Unleash/unleash/issues/3140)
* fix: slack back link url to point to the feature page
* update snapshots
* update feature link in case project info is available in event
* update missing snapshot
