Add standard set of vscode workspace setting files (PowerShell#5457)

* Add standard set of vscode workspace setting files

Add an extensions.json file that will prompt folks to install extensions that are recommended for this workspace (c++, c#, powershell, cmake (editing syntax) and markdown linter.

Add settings.json to start to configure C# syntax, PoweShell trim trailing whitespace and configure the markdown lint extension.

Update launch.json to provide ability to debug PowerShell scripts.

* Clean up grammar

* Instruct VSCode to ensure a final newline.

If this is not wanted for certain file types, we can restrict this option to only specified file types.

.gitignore

@@ -57,9 +57,6 @@ gen
 # Per repo profile
 .profile.ps1
 
-#VS Code files
-.vscode
-
 # macOS
 .DS_Store
 
@@ -68,4 +65,3 @@ TestsResults*.xml
 
 # Resharper settings
 PowerShell.sln.DotSettings.user
-

.vscode/extensions.json

@@ -0,0 +1,11 @@
+{
+  // See http://go.microsoft.com/fwlink/?LinkId=827846
+  // for the documentation about the extensions.json format
+  "recommendations": [
+    "ms-vscode.cpptools",
+    "ms-vscode.csharp",
+    "ms-vscode.PowerShell",
+    "twxs.cmake",
+    "DavidAnson.vscode-markdownlint"
+  ]
+}

.vscode/launch.json

@@ -18,6 +18,24 @@
             "request": "attach",
             "justMyCode": false,
             "processId": "${command:pickProcess}"
+        },
+        {
+            "type": "PowerShell",
+            "request": "launch",
+            "name": "PowerShell Launch Current File",
+            "script": "${file}",
+            "args": [],
+            "cwd": "${file}"
+        },
+        {
+            "type": "PowerShell",
+            "request": "launch",
+            "name": "PowerShell Launch Current File w/Args Prompt",
+            "script": "${file}",
+            "args": [
+                "${command:SpecifyScriptArgs}"
+            ],
+            "cwd": "${file}"
         }
     ]
 }

.vscode/settings.json

@@ -0,0 +1,22 @@
+// Place your settings in this file to overwrite default and user settings.
+{
+  "editor.tabSize": 4,
+  "editor.insertSpaces": true,
+
+  "files.insertFinalNewline": true,
+
+  // Based on current .markdownlist.json settings:
+  // https://github.com/PowerShell/PowerShell/blob/master/.markdownlint.json
+  "markdownlint.config": {
+    "MD004": false,
+    "MD024": false,
+    "MD033": false,
+    "MD034": false,
+    "MD038": false,
+    "MD042": false
+  },
+
+  "[powershell]": {
+    "files.trimTrailingWhitespace": true
+  }
+}