QuickFixMultiModule: change tests structure

idea/testData/multiModuleQuickFix/other/createClassFromUsageRef/header/a/b/B1.kt

@@ -0,0 +1 @@
+package a.b

idea/testData/multiModuleQuickFix/other/createClassFromUsageRef/header/a/b/ClassG.after

@@ -0,0 +1,5 @@
+package a.b
+
+class ClassG {
+
+}

idea/testData/multiModuleQuickFix/other/createClassFromUsageRef/header/a/common.after

@@ -0,0 +1,9 @@
+// "Create class 'ClassG'" "true"
+
+package a
+
+import a.b.ClassG
+
+fun test() {
+    ClassG()
+}

idea/testData/multiModuleQuickFix/other/createClassFromUsageRef/header/a/common.kt

@@ -0,0 +1,7 @@
+// "Create class 'ClassG'" "true"
+
+package a
+
+fun test() {
+    a.b.ClassG<caret>()
+}