feat(build): enhance code obfuscation in minification process

- Enable top-level symbol mangling
- Add property name mangling with selective rules
- Preserve 'parseTemplateString' function name and quoted properties

This change increases code protection while maintaining the public API.
The resulting minified file should be significantly smaller and harder
to reverse-engineer, without affecting its functionality.

.github/workflows/publish.yml

@@ -28,7 +28,7 @@ jobs:
         run: |
           npx terser safe-template-parser.js \
             --compress passes=3,pure_getters=true,keep_fargs=false,unsafe=true,unsafe_comps=true,unsafe_math=true,unsafe_proto=true,unsafe_regexp=true,conditionals=true,evaluate=true,booleans=true,loops=true,unused=true,hoist_funs=true,keep_fargs=false,hoist_vars=true,if_return=true,join_vars=true,drop_console=true,drop_debugger=true,ecma=2015,toplevel=true \
-            --mangle reserved=['parseTemplateString'] \
+            --mangle reserved=['parseTemplateString'],toplevel=true,properties --mangle-props keep_quoted=true,regex=/^_/ \
             --output safe-template-parser.min.js
 
       - name: Calculate file sizes