docs: add checks

Author: SayanthRock

docs/CHECKS.md

@@ -0,0 +1,19 @@
+# Checks
+
+## Build checks
+
+- Required files present
+- Required folders present
+- Default theme present
+- Design tokens present
+- Customer options present
+- Asset size check runs
+- ZIP package created
+
+## Release checks
+
+- Artifact downloaded
+- Test device checked
+- Theme preview checked
+- Customer guide checked
+- Device matrix updated