KT-7135 Java to Kotlin converter should update usages in Java and Koltin code in the rest of the project

#KT-7135 Fixed

j2k/testData/multiFile/ToCompanionObject/ClassWithStatics.java

@@ -0,0 +1,14 @@
+package test;
+
+class ClassWithStatics {
+    public void instanceMethod(){}
+
+    public static void staticMethod(int p) {}
+
+    public static final int staticField = 1;
+
+    protected static int ourValue = 0;
+
+    public static int getValue() { return ourValue; }
+    public static void setValue(int value) { ourValue = value; }
+}

j2k/testData/multiFile/ToCompanionObject/ClassWithStatics.kt

@@ -0,0 +1,16 @@
+package test
+
+open class ClassWithStatics {
+    public fun instanceMethod() {
+    }
+
+    companion object {
+
+        public fun staticMethod(p: Int) {
+        }
+
+        public val staticField: Int = 1
+
+        public var value: Int = 0
+    }
+}

j2k/testData/multiFile/ToCompanionObject/external/JavaFile.java

@@ -0,0 +1,16 @@
+package test;
+
+class C {
+    void foo(ClassWithStatics c) {
+        ClassWithStatics.staticMethod(ClassWithStatics.staticField);
+        c.instanceMethod();
+        ClassWithStatics.staticField += 2;
+    }
+}
+
+class D extends ClassWithStatics {
+    void foo() {
+        staticMethod(staticField);
+        ourValue *= 2;
+    }
+}

j2k/testData/multiFile/ToCompanionObject/external/JavaFile.java.expected

@@ -0,0 +1,16 @@
+package test;
+
+class C {
+    void foo(ClassWithStatics c) {
+        ClassWithStatics.Companion.staticMethod(ClassWithStatics.staticField);
+        c.instanceMethod();
+        ClassWithStatics.staticField += 2;
+    }
+}
+
+class D extends ClassWithStatics {
+    void foo() {
+        Companion.staticMethod(staticField);
+        value *= 2;
+    }
+}

j2k/testData/multiFile/ToCompanionObject/external/KotlinFile.kt

@@ -0,0 +1,5 @@
+package test
+
+fun foo() {
+    ClassWithStatics.staticMethod(ClassWithStatics.staticField)
+}

j2k/testData/multiFile/ToCompanionObject/external/KotlinFile.kt.expected

@@ -0,0 +1,5 @@
+package test
+
+fun foo() {
+    ClassWithStatics.staticMethod(ClassWithStatics.staticField)
+}