[FIR-TEST] Move analysis tests to separate module

compiler/fir/analysis-tests/testData/resolve/smartcasts/problems/invoke.kt

@@ -0,0 +1,9 @@
+fun Any.withInvoke(f: String.() -> Unit) {
+    if (this is String) {
+        f() // Should be OK
+    }
+}
+
+fun String.withInvoke(f: String.() -> Unit) {
+    f()
+}