feat: add luacheck (WIP)

Author: NTBBloodbath

.luacheckrc

@@ -0,0 +1,15 @@
+-- Use lua52 so we will no receive errors regarding to goto statements
+std = 'lua52'
+
+-- Rerun tests only if their modification time changed
+cache = true
+
+ignore = {
+	'631', -- max_line_length
+}
+
+read_globals = {
+	'vim',
+}
+
+-- vim: ft=lua