manatee: Add komga-bookmanager service

secrets/manatee/komga-bookmanager-credentials.age

@@ -0,0 +1,7 @@
+age-encryption.org/v1
+-> ssh-ed25519 wkRvNA GW8mvnaXpspxr78xV0fKhXwHVvReyjvDc0v7uPwhuBI
+Rne8JZYVhrTTesSFpRQ/IOZlFIMoX9Wmv5n1Ed7Ehv8
+-> ssh-ed25519 +oNaHQ d7utzodGQ7LsD2Uht1rbT8Qq9BZp3PkJS9EDhajCjnk
+qd2Vj+1TQrjEKkSVAf0cXcCdkgeN/Jbp4UrBSp3cKYQ
+--- JQr5UQlutONqnTeoT/mIVZL8ME7ipUDK8zDfNcN3uhU
+ø5-VŸÌ²ÂòÀ-®ªÁÅ'^žô5kú.t(d1‡)É'<u%

secrets/secrets.nix

@@ -34,6 +34,7 @@ in {
   "manatee/syncthing-key.age".publicKeys = [ manatee alex ];
   "manatee/hetzner-dns.age".publicKeys = [ manatee alex ];
   "manatee/komga-comicbooktracker-credentials.age".publicKeys = [ manatee alex];
+  "manatee/komga-bookmanager-credentials.age".publicKeys = [ manatee alex];
 
   "backwards/root.backwards.age".publicKeys = [ backwards alex ];
   "backwards/root.backwards.pub.age".publicKeys = [ backwards alex ];