[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/deparenthesize/checkDeparenthesizedType.fir.kt

@@ -20,7 +20,7 @@ fun test(i: Int?) {
     <!INAPPLICABLE_CANDIDATE!>foo<!>(l4@ "")
     <!INAPPLICABLE_CANDIDATE!>foo<!>((""))
     foo(<!INAPPLICABLE_CANDIDATE!>checkSubtype<!><Int>(""))
-    foo(<!INAPPLICABLE_CANDIDATE!>checkSubtype<!><Long>(""))
+    <!INAPPLICABLE_CANDIDATE!>foo<!>(<!INAPPLICABLE_CANDIDATE!>checkSubtype<!><Long>(""))
     
     use(a, b, c, d)
 }