fix(pack): exclude server config and runtime files from packwiz index

A packwiz refresh run in the server directory would have indexed
config/, kubejs/ and other runtime files into the pack index.

.packwizignore

@@ -11,3 +11,16 @@ run.sh
 *.jar
 *.jar.log
 run.bat
+config/
+kubejs/
+defaultconfigs/
+local/
+ftbbackups3/
+patchouli_books/
+.sable/
+*.json
+*.log
+*.pid
+.pi/
+resourcepacks/*.zip
+start.sh