Added git settings for branch name suggestion, protection, pull, and …

…mergeEditor (microsoft#21954)

VS Code repository, specifically in the .vscode/settings.json, has some
nice git features such as:
Issue: microsoft#21955
"git.branchRandomName.enable" (for suggesting random branch name when
creating a new branch, comes in very handy when person wants to make and
try quick changes in Codespaces),
"git.branchProtection" (for branch protection), 
"git.pullBeforeCheckout": (for pulling before checking out a branch), 
"git.mergeEditor": (for making easier when in times of resolving merge
conflicts)

which I found could be useful to the Python extension repository as
well.

Credits to @karrtikr for suggesting random name, and branch protection.

.vscode/settings.json

@@ -65,5 +65,14 @@
         "--max-line-length=88"
     ],
     "typescript.preferences.importModuleSpecifier": "relative",
-    "debug.javascript.usePreview": false
+    "debug.javascript.usePreview": false,
+    // Branch name suggestion.
+    "git.branchRandomName.enable": true,
+    "git.branchProtection": [
+		"main",
+		"release/*"
+	],
+    "git.pullBeforeCheckout": true,
+    // Open merge editor for resolving conflicts.
+    "git.mergeEditor": true,
 }