Add the arclint file in kwayland

Summary:
- xml linter to make sure that we don't add broken protocols
- merge-conflict so that we don't commit merge-conflict markers
- spell check for documentation
- cppcheck to check the code

Test Plan: broke some files manually, and then ran arc lint

Reviewers: #frameworks, mart

Reviewed By: mart

Subscribers: kde-frameworks-devel

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D13533

src/wayland/.arclint

@@ -0,0 +1,20 @@
+{
+  "exclude": "(^test/)",
+  "linters": {
+    "spelling": {
+      "type": "spelling"
+    },
+    "merge-conflict": {
+      "type": "merge-conflict"
+    },
+    "xml": {
+      "type": "xml",
+      "include": "(\\.xml$)"
+    },
+    "cppcheck": {
+      "type": "cppcheck",
+      "include": "(\\.(cpp|h|cxx|hpp)$)",
+      "flags": ["--language=c++", "--std=c++11"]
+    }
+  }
+}