gitignore: Start ignoring ".vscode"

To help the developers who use Visual Studio Code IDE,
ignore the ".vscode" folder in Git. This folder contains
local configuration of the VSCode workspace.

Change-Id: I1d54d8ce2bd0680f2fa1fb773bb33c786bdcc608
Signed-off-by: Jan Matyas <[email protected]>
Reviewed-on: https://review.openocd.org/c/openocd/+/8518
Reviewed-by: Antonio Borneo <[email protected]>
Tested-by: jenkins

Author: JanMatCodasip

.gitignore

@@ -84,6 +84,9 @@ patches
 .cproject
 .settings
 
+# VSCode stuff
+.vscode
+
 # Emacs temp files
 *~