style: add trailing line breaks to package.json files (#5542)

For consistency with our `.editorconfig`.

crates/oxc_linter/fixtures/import/package-named/package.json

@@ -2,4 +2,4 @@
   "name": "package-named",
   "description": "Standard, named package",
   "main": "index.js"
-}
+}

crates/oxc_linter/fixtures/import/package/package.json

@@ -1,4 +1,4 @@
 {
   "description": "Unnamed package for reaching through main field - rxjs style",
   "main": "index.js"
-}
+}

editors/vscode/package.json

@@ -155,4 +155,4 @@
   "vsce": {
     "dependencies": false
   }
-}
+}

npm/oxc-parser/package.json

@@ -22,4 +22,4 @@
     "index.d.ts",
     "index.js"
   ]
-}
+}

npm/oxc-transform/package.json

@@ -22,4 +22,4 @@
     "index.d.ts",
     "index.js"
   ]
-}
+}

npm/oxlint/package.json

@@ -25,4 +25,4 @@
     "configuration_schema.json",
     "README.md"
   ]
-}
+}

tasks/coverage/src/runtime/package.json

@@ -1 +1,3 @@
-{ "type": "module" }
+{
+    "type": "module"
+}