check modifiers for local declarations

compiler/testData/diagnostics/tests/declarationChecks/localDeclarationModifiers.kt

@@ -0,0 +1,12 @@
+package d
+
+class T {
+    fun baz() = 1
+}
+
+fun foo() {
+    <!ILLEGAL_MODIFIER!>public<!> val <!UNUSED_VARIABLE!>i<!> = 11
+    <!ILLEGAL_MODIFIER!>abstract<!> val <!VARIABLE_WITH_NO_TYPE_NO_INITIALIZER, UNUSED_VARIABLE!>j<!>
+    <!ILLEGAL_MODIFIER!>override<!> fun T.baz() = 2
+    <!ILLEGAL_MODIFIER!>private<!> fun bar() = 2
+}