Docs: Add documentation on how to create a new tag

docs/Creating_a_New_Tag.md

@@ -0,0 +1,22 @@
+# Creating a New Tag
+
+To create a new tag, do the following:
+
+1. Fill out `git_annotated_tag_template`.
+2. Run the following command:
+
+   ```
+   git tag -a -F git_annotated_tag_template -s --cleanup=verbatim <tagname> [<commit>]
+   ```
+
+3. Restore `git_annotated_tag_template` to its original state:
+
+   ```
+   git restore git_annotated_tag_template
+   ```
+
+4. Push the new tag.
+
+   ```
+   git push --tags
+   ```