navi: Add git tag helpers

navi/git.cheat

@@ -58,3 +58,14 @@ git commit --no-verify
 
 # Create new branch from current HEAD
 git checkout -b <new_branch_name>
+
+# Create and push tag
+git tag <name>
+git push origin <name>
+
+# Delete and push tag
+git tag -d <tag_name>
+git push -d origin <tag_name>
+
+# Variables
+$ tag_name: git tag -l | awk '{print $1}'