FIR resolve: add partial support of extension lambda calls

Here we introduce ONLY_IMPLICIT_RECEIVER tower level
to support extension lambda calls on local variables,
and soften extension receiver checks to make such extensions visible & applicable.
Also here we try to map arguments twice for functional types

compiler/testData/diagnostics/tests/FreeFunctionCalledAsExtension.fir.kt

@@ -9,5 +9,5 @@ interface A : (String) -> Unit {}
 fun foo(a: @ExtensionFunctionType A) {
     // @Extension annotation on an unrelated type shouldn't have any effect on this diagnostic.
     // Only kotlin.Function{n} type annotated with @Extension should
-    "".<!UNRESOLVED_REFERENCE!>a<!>()
+    "".a()
 }