Add precommit script (#3018)

* Add precommit script

* Merge stuff

.github/PULL_REQUEST_TEMPLATE.md

@@ -4,7 +4,4 @@
 
 ## Checklist
 
-Please make sure you've completed the following steps before submitting:
-
-- [ ] I have run `./script/fmt_all.sh` to format the code
-- [ ] I have run `./script/clippy.sh` and fixed all errors/warnings
+- [ ] I have run `./scripts/precommit.sh` and addressed all comments

scripts/precommit.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+cd "$SCRIPT_DIR/.." || exit 1
+
+echo "[*] Formatting this beautiful code"
+echo
+"$SCRIPT_DIR"/fmt_all.sh || exit 1
+echo
+echo "[*] Asking clippy how to excel"
+echo
+"$SCRIPT_DIR"/fmt_all.sh || exit 1
+echo
+echo "[!] All done. Ready to commit!"