git-apply: add page (#4252)

* git-apply: add page

* Apply suggestions from code review

Co-authored-by: Starbeamrainbowlabs <sbrl@starbeamrainbowlabs.com>

Co-authored-by: Starbeamrainbowlabs <sbrl@starbeamrainbowlabs.com>

pages/common/git-apply.md

@@ -0,0 +1,28 @@
+# git apply
+
+> Apply a patch to files and/or to the index.
+> More information: <https://git-scm.com/docs/git-apply>.
+
+- Print messages about the patched files:
+
+`git apply --verbose {{path/to/file}}`
+
+- Apply and add the patched files to the index:
+
+`git apply --index {{path/to/file}}`
+
+- Apply a remote patch file:
+
+`curl {{https://example.com/file.patch}} | git apply`
+
+- Output diffstat for the input and apply the patch:
+
+`git apply --stat --apply {{path/to/file}}`
+
+- Apply the patch in reverse:
+
+`git apply --reverse {{path/to/file}}`
+
+- Store the patch result in the index without modifying the working tree:
+
+`git apply --cache {{path/to/file}}`