[FIR] Improve diagnostic reporting & don't use error symbol for candidate if possible

Also introduce few new diagnostics:
- NONE_APPLICABLE more many inapplicable candidates
- HIDDEN for visible candidates

compiler/testData/diagnostics/tests/resolve/invoke/functionExpectedWhenSeveralInvokesExist.fir.kt

@@ -7,8 +7,8 @@ fun Int.invoke(a: Int, b: Int) {}
 class SomeClass
 
 fun test(identifier: SomeClass, fn: String.() -> Unit) {
-    <!INAPPLICABLE_CANDIDATE!>identifier<!>()
+    <!NONE_APPLICABLE!>identifier<!>()
     <!INAPPLICABLE_CANDIDATE!>identifier<!>(123)
     <!INAPPLICABLE_CANDIDATE!>identifier<!>(1, 2)
     1.<!INAPPLICABLE_CANDIDATE!>fn<!>()
-}
+}