test(codly-languages): change approach and add tests

- just make #codly-languages return the full dictionary instead of
  trying to add the aliases dynamically
- add test.typ
- ignore `**/test*.pdf`

sync.sh

@@ -3,11 +3,14 @@
 # Set the destination directory
 DEST_DIR="$HOME/Code/typst-packages-fork/packages/preview"
 
+# Move to the source directory
+cd preview
+
 # Ensure the destination directory exists
 mkdir -p "$DEST_DIR"
 
 # Loop through all directories in the current directory
-for dir in preview/*/; do
+for dir in */; do
   if [ -d "$dir" ]; then
     # Remove trailing slash from directory name
     dir=${dir%/}