Move stub building from psi module to analysis module

analysis/decompiled/decompiler-to-file-stubs/testData/clsFileStubBuilder/DataClass/DataClass.kt

@@ -0,0 +1,5 @@
+package a.b.c
+
+public data class DataClass(val i: Int, val j: String) {
+    fun f() = 3
+}