[FIR-TEST] Move analysis tests to separate module

compiler/fir/analysis-tests/testData/resolve/overrides/simple.kt

@@ -0,0 +1,20 @@
+
+
+open class A {
+    open fun foo(): A = this
+    open fun bar(): A = this
+    open fun buz(p: A): A = this
+}
+
+class B : A() {
+    override fun foo(): B = this
+    fun bar(): B = this // Ambiguity, no override here (really it's just "missing override" and no ambiguity)
+    override fun buz(p: B): B = this //No override as B <!:> A
+
+    fun test() {
+        foo()
+        bar()
+        <!INAPPLICABLE_CANDIDATE!>buz<!>()
+    }
+}
+