[FIR] Implement FirReturnAllowedChecker

Supported diagnostics:
- RETURN_NOT_ALLOWED
- RETURN_IN_FUNCTION_WITH_EXPRESSION_BODY

compiler/testData/diagnostics/testsWithStdLib/inline/inlineConstructorOfArray.kt

@@ -0,0 +1,20 @@
+// FIR_IDENTICAL
+fun testArray(b: Boolean) {
+    Array(5) { i ->
+        if (b) return
+        i
+    }
+    throw AssertionError()
+}
+
+fun testMyArray(b: Boolean) {
+    MyArray(5) { i ->
+        if (b) <!RETURN_NOT_ALLOWED!>return<!>
+        i
+    }
+    throw AssertionError()
+}
+
+class MyArray<T> {
+    constructor(size: Int, init: (Int) -> T)
+}