Add prettier config

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Author: filiptronicek

.prettierrc.json

@@ -0,0 +1,6 @@
+{
+    "printWidth": 120,
+    "tabWidth": 4,
+    "endOfLine": "auto",
+    "trailingComma": "all"
+}

package.json

@@ -24,7 +24,8 @@
   "bin": "bin/publish-extensions",
   "main": "publish-extensions",
   "scripts": {
-    "publish": "node publish-extensions"
+    "publish": "node publish-extensions",
+    "format": "prettier --write ."
   },
   "dependencies": {
     "@vscode/vsce": "^2.18.0",
@@ -36,6 +37,7 @@
     "minimist": "^1.2.5",
     "octokit": "^3.1.2",
     "ovsx": "latest",
+    "prettier": "^3.2.5",
     "semver": "^7.1.3"
   },
   "devDependencies": {