[FIR-TEST] Move analysis tests to separate module

compiler/fir/analysis-tests/testData/resolve/smartcasts/receivers/thisOfExtensionProperty.kt

@@ -0,0 +1,12 @@
+// !DUMP_CFG
+interface A
+
+interface B {
+    val b: Boolean
+}
+
+val A.check_1: Boolean
+    get() = this is B && b
+
+val A.check_2: Boolean
+    get() = this is B && this.b