Created module idea-test-framework and moved classes needed for idea tests there

Moved tests for completion and their test data into module idea-completion

idea/idea-completion/testData/smartMultiFile/GenericInheritors1/GenericInheritors1.kt

@@ -0,0 +1,15 @@
+import p.*
+
+fun foo(): KotlinTrait<I1, I2> {
+    return <caret>
+}
+
+// EXIST: { lookupString: "object", itemText: "object: KotlinTrait<I1, I2>{...}" }
+// EXIST: { lookupString: "KotlinInheritor1", itemText: "KotlinInheritor1<I1>", tailText: "() (p)" }
+// EXIST: { lookupString: "KotlinInheritor2", itemText: "KotlinInheritor2", tailText: "() (p)" }
+// ABSENT: KotlinInheritor3
+// EXIST: { lookupString: "object", itemText: "object: KotlinInheritor4<I1, I2>(){...}" }
+// ABSENT: KotlinInheritor5
+// EXIST: { lookupString: "KotlinInheritor6", itemText: "KotlinInheritor6<I1, Any?, I3>", tailText: "() (p)" }
+// EXIST: { lookupString: "JavaInheritor1", itemText: "JavaInheritor1", tailText: "() (<root>)" }
+// ABSENT: JavaInheritor2

idea/idea-completion/testData/smartMultiFile/GenericInheritors1/JavaInheritors.java

@@ -0,0 +1,6 @@
+import p.*
+
+class JavaInheritor1 implements KotlinTrait<I1, I2>{}
+
+// is not suitable because type arguments do not match
+class JavaInheritor2 implements KotlinTrait<I1, I3>{}

idea/idea-completion/testData/smartMultiFile/GenericInheritors1/KotlinInheritors.kt

@@ -0,0 +1,23 @@
+package p
+
+trait I1
+trait I2
+trait I3
+
+trait KotlinTrait<T1, T2>
+
+open class KotlinInheritor1<T> : KotlinTrait<T, I2>
+
+class KotlinInheritor2 : KotlinInheritor1<I1>()
+
+// is not suitable because type arguments do not match
+class KotlinInheritor3 : KotlinInheritor1<Any>()
+
+abstract class KotlinInheritor4<T, V> : KotlinTrait<T, V>
+
+// is not suitable because type arguments do not match
+class KotlinInheritor5 : KotlinTrait<Char, I2>
+
+class KotlinInheritor6<T1, T2, T3 : I3> : KotlinTrait<T1, I2>
+
+// ALLOW_AST_ACCESS