Fix false-positive red squiggles on all decorators in VS Code

The `js/ts.implicitProjectConfig.experimentalDecorators` setting in Visual Studio Code
causes incorrect type-checking behavior and triggers false-positive red squiggles on
ALL decorators when working in a multi-package TypeScript project. This setting
conflicts with our explicit tsconfig configuration and should not be enabled.

Author: RyanMyrvold

.gitignore

@@ -9,7 +9,6 @@ out/
 *.tsbuildinfo
 
 # IDE and Editor folders
-.vscode/
 .idea/
 *.swp
 *.swo

.vscode/settings.json

@@ -0,0 +1,25 @@
+{
+    "files.exclude": {
+        "**/.git": true,
+        "**/.svn": true,
+        "**/.hg": true,
+        "**/.DS_Store": true,
+        "**/Thumbs.db": true,
+        "PULL_REQUEST_TEMPLATE.md": true,
+        "node_modules": true,
+        "tsconfig.tsbuildinfo": true,
+        "packages/node/tsconfig.tsbuildinfo": true,
+        "packages/browser/tsconfig.tsbuildinfo": true,
+        "packages/common/tsconfig.tsbuildinfo": true,
+        "**/node_modules": true
+    },
+    "hide-files.files": [
+        "PULL_REQUEST_TEMPLATE.md",
+        "node_modules",
+        "tsconfig.tsbuildinfo",
+        "packages/node/tsconfig.tsbuildinfo",
+        "packages/browser/tsconfig.tsbuildinfo",
+        "packages/common/tsconfig.tsbuildinfo"
+    ],
+    "js/ts.implicitProjectConfig.experimentalDecorators": false
+}