feat(web): gesture path snapshots 🐵

chore(web): test/test-resource cleanup & generic typing on stats object 🐵

chore(web): Merge remote-tracking branch 'origin/feat/web/gesture-path-snapshots' into feat/web/gesture-path-snapshots

Co-authored-by: Marc Durdin <marc@durdin.net>

chore(web): merge master into feature-gestures (end of A17S17)

fix(web): syncs timestamps of active contact points, paths 🐵

fix(web): allows registering precached keyboards

fix(linux): Fix installation of keyboards with lang tag `mul`

fix(windows): open pdf in an external browser