Add support for --force-if-includes to force push more safely (#187932)

* Add support for `--force-if-includes` to force push

* Change force push failed error message

* Separate force push (no with lease) failed error message

* Switch to `"markdownDescription"`

* Add Git version requirement for config description

* Improve error message when safer force push is rejected

* Eliminate the option's effect if Git is too old

* Minor improvements to community contribution

---------

Co-authored-by: Ladislau Szomoru <3372902+lszomoru@users.noreply.github.com>

extensions/git/package.json

@@ -2569,6 +2569,11 @@
           "default": true,
           "description": "%config.useForcePushWithLease%"
         },
+        "git.useForcePushIfIncludes": {
+          "type": "boolean",
+          "default": true,
+          "markdownDescription": "%config.useForcePushIfIncludes%"
+        },
         "git.confirmForcePush": {
           "type": "boolean",
           "default": true,