Add function to check if /opt/am is read-only

APP-MANAGER

@@ -276,6 +276,14 @@ function _am_security_check() {
 	fi
 }
 
+function _check_if_am_is_read_only() {
+	if [ $AMCLI == am ] 2>/dev/null; then
+		if [ -w /opt/am ]; then
+			echo -e " 💀ERROR: /opt/am is read-only, consider using \"am --user\""
+		fi
+	fi
+}
+
 # Function to check online connections (uses github.com by default, as the database and CLI itself are stored/hosted there)
 function _online_check() {
 	if ! wget -q --tries=10 --timeout=20 --spider https://github.com; then