Add .gitignore and .luacheckrc

.gitignore

@@ -0,0 +1,22 @@
+## Files related to minetest development cycle
+/*.patch
+# GNU Patch reject file
+*.rej
+
+## Editors and Development environments
+*~
+*.swp
+*.bak*
+*.orig
+# Vim
+*.vim
+# Kate
+.*.kate-swp
+.swp.*
+# Eclipse (LDT)
+.project
+.settings/
+.buildpath
+.metadata
+# Idea IDE
+.idea/*

.luacheckrc

@@ -0,0 +1,8 @@
+unused_args = false
+allow_defined_top = true
+
+read_globals = {
+	"minetest",
+	"default",
+	"vector",
+}