WIP: add //tools/gen_browserslist

Author: dgp1130

package.json

@@ -98,6 +98,7 @@
     "@typescript-eslint/parser": "8.29.1",
     "ajv": "8.17.1",
     "ansi-colors": "4.1.3",
+    "baseline-browser-mapping": "^2.2.0",
     "beasties": "0.3.2",
     "bl2bl": "^0.2.0",
     "buffer": "6.0.3",