Add generated files to gitignore to have a clean stage

.gitignore

@@ -2,6 +2,7 @@
 /node_modules/
 /server/tools/node_modules
 *npm-debug.log
+yarn-error.log
 
 # Testing
 /test1/
@@ -45,3 +46,4 @@
 /*.asc
 /server/tools/import-mediacore.ts
 /docker-volume/
+/init.mp4

client/.gitignore

@@ -4,6 +4,7 @@
 /stats.json
 /dll
 /.awcache
+/src/locale/pending_target/
 /src/locale/target/iso639_*.xml
 /src/locale/target/player_*.xml
-/src/locale/target/server_*.xml
+/src/locale/target/server_*.xml