Add compiler module index page

Author: aedart

docs/+current/modules/compiler/index.md

@@ -0,0 +1,16 @@
+---
+title: Compiler
+description: How to use the compiler module.
+keywords: compiler, cmake
+author: RSP Systems A/S
+---
+
+# Compiler
+
+Module that contains compiler specific helpers and utilities.
+
+## How to include
+
+```cmake
+include("rsp/compiler")
+```