Upgrade to Manifest V3, reduce errors, tune permissions

[funblaster22]

Upgrade manifest v3: Renamed entries in manifest

Reduce errors: Add onInstalled listener, which fixes Unchecked runtime.lastError: Cannot create item with duplicate id ViewImage-SearchByImage

Tune permissions: Replace tabs with activeTab permission, which do longer prompts permission every time

[bijij]

Hi @funblaster22 thanks for doing this, I'll take some time tomorrow to review this, just a note for now this would likely be shipped as v4 since moving manifest version imo is breaking enough. so might be worth changing that once you've got time!

[funblaster22]

Ok, I bumped the version but accidently made a merge conflict in the process sorry 😞

[bijij]

@funblaster22 Since manifest V3's pretty much ready for firefox I'll take some time to look into merging this in in the coming weeks. Thanks again for doing this!

[Saibamen]

in in the coming weeks

;)

[bijij]

This was manually rebased to handle support for Firefox. Thanks for this.