Add missing community-submitted addons to submitter tracking

Added 15 new addon→submitter mappings based on git history and PR analysis:
- gitea, navidrome, openproject → baldarn
- kometa, tor → akrigator
- netalertx → jokob-sk
- librespeed → el
- manyfold → ToledoEM
- resiliosync → tyjtyj
- emby, jellyfin, jackett, nzbget, sonarr, radarr → petersendev

Co-authored-by: alexbelgium <44178713+alexbelgium@users.noreply.github.com>

.github/addon_submitters.json

@@ -1,4 +1,19 @@
 {
-  "whatsapper": "baldarn",
-  "spotweb": "woutercoppens"
+  "emby": "petersendev",
+  "gitea": "baldarn",
+  "jackett": "petersendev",
+  "jellyfin": "petersendev",
+  "kometa": "akrigator",
+  "librespeed": "el",
+  "manyfold": "ToledoEM",
+  "navidrome": "baldarn",
+  "netalertx": "jokob-sk",
+  "nzbget": "petersendev",
+  "openproject": "baldarn",
+  "radarr": "petersendev",
+  "resiliosync": "tyjtyj",
+  "sonarr": "petersendev",
+  "spotweb": "woutercoppens",
+  "tor": "akrigator",
+  "whatsapper": "baldarn"
 }