chore: split monolithic header to proper program files, add vec2 ruby class to proxy element position etc., other cleanup

libs/l_mgems/compile.sh

@@ -4,7 +4,7 @@ set -e
 
 SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 OUTPUT_TMP=$(mktemp)
-OUTPUT="$SCRIPT_DIR/../../include/binding/ruby_compiled.h"
+OUTPUT="$SCRIPT_DIR/../../include/bindings/ruby_compiled.h"
 
 if test "$1" = "clean"; then
   rm -f "$OUTPUT"
@@ -26,6 +26,8 @@ if test "$OUTPUT_TIME" -ge "$LATEST_FILE_TIME"; then
   exit 0
 fi
 
+echo "Compiling mgems..."
+
 "$SCRIPT_DIR/../mruby/bin/mrbc" -o "$OUTPUT_TMP" "${FILES[@]}"
 
 {