build(tasks): Add tasks script

tasks.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/env zsh
+CMDNAME=$0
+SUBMODULES=("Apps/Directus CMS")
+
+exit_with_msg() {
+	local msg=$1 code=$2
+	echo $msg >&2
+	exit $code
+}
+
+is_clean_git_workspace() {
+	git diff-index --quiet HEAD
+}
+
+commit_submodule_changes() {
+	# REQUIRES submodule to be a valid variable.
+	git add .
+	git commit -m "chore(${submodule:t}): Pull remote changes"
+}
+
+update_submodules() {
+	local submodule
+	for submodule in ${SUBMODULES}; do
+		[[ ! -d $submodule ]] && continue
+		echo ">> Updating submodule ${submodule}"
+		pushd -q $submodule
+			git pull --rebase
+		popd -q
+		is_clean_git_workspace && continue
+		commit_submodule_changes
+	done
+}
+
+show_help() {
+	cat <<- HELPMSG
+	$CMDNAME [command]
+
+	Task manager for HDA - CMS monorepo.
+
+	Commands
+		start:	Run daily chores like pulling upstream changes and updating
+		      	submodules.
+	HELPMSG
+}
+
+main() {
+	local CMD=$1
+
+	case $CMD in
+		start)
+			is_clean_git_workspace || exit_with_msg "Please clean workspace before running command" 10
+			update_submodules
+			;;
+		*)
+			show_help
+			;;
+	esac
+}
+
+main $*