Add PowerShell VSCode style settings (PowerShell#5529)

.vscode/settings.json

@@ -18,5 +18,20 @@
 
   "[powershell]": {
     "files.trimTrailingWhitespace": true
-  }
+  },
+
+  // Sets the codeformatting options to follow the given indent style in a way that is compatible with PowerShell syntax. For more information about the brace styles please refer to https://github.com/PoshCode/PowerShellPracticeAndStyle/issues/81.
+  "powershell.codeFormatting.preset": "OTBS",
+
+  // Adds a space between a keyword and its associated scriptblock expression.
+  "powershell.codeFormatting.whitespaceBeforeOpenBrace": true,
+
+  // Adds a space between a keyword (if, elseif, while, switch, etc) and its associated conditional expression.
+  "powershell.codeFormatting.whitespaceBeforeOpenParen": true,
+
+  // Adds spaces before and after an operator ('=', '+', '-', etc.).
+  "powershell.codeFormatting.whitespaceAroundOperator": true,
+
+  // Adds a space after a separator (',' and ';').
+  "powershell.codeFormatting.whitespaceAfterSeparator": true
 }