fix(package): remove CLI bin wrapper and exclude bin/ from published files

package.json

@@ -30,9 +30,6 @@
   "exports": {
     ".": "./dist_ts/index.js"
   },
-  "bin": {
-    "mailer": "./bin/mailer-wrapper.js"
-  },
   "scripts": {
     "test": "tstest test/ --logfile --verbose --timeout 60",
     "build": "tsbuild tsfolders && tsrust",
@@ -61,7 +58,6 @@
   "files": [
     "ts/**/*",
     "dist_ts/**/*",
-    "bin/",
     "scripts/install-binary.js",
     "dist_rust/**/*",
     "readme.md",