chore: add .luarc.json

Author: tmillr

.luarc.json

@@ -0,0 +1,16 @@
+{
+  "runtime": {
+    "version": "LuaJIT",
+    "path": [
+      "lua/?.lua",
+      "lua/?/init.lua"
+    ],
+    "pathStrict": true
+  },
+  "workspace": {
+    "checkThirdParty": "Disable",
+    "library": [
+      "test/plenary"
+    ]
+  }
+}