Add inspection to highlight unnecessary explicit companion references

So #KT-22971 Fixed

idea/testData/inspectionsLocal/redundantCompanionReference/.inspection

@@ -0,0 +1 @@
+org.jetbrains.kotlin.idea.inspections.RedundantCompanionReferenceInspection

idea/testData/inspectionsLocal/redundantCompanionReference/basic.kt

@@ -0,0 +1,9 @@
+class C {
+    companion object {
+        fun create() = C()
+    }
+}
+
+fun test() {
+    C.<caret>Companion.create()
+}

idea/testData/inspectionsLocal/redundantCompanionReference/basic.kt.after

@@ -0,0 +1,9 @@
+class C {
+    companion object {
+        fun create() = C()
+    }
+}
+
+fun test() {
+    C.create()
+}

idea/testData/inspectionsLocal/redundantCompanionReference/directCompanion.kt

@@ -0,0 +1,8 @@
+class C {
+    companion object {
+        fun create() = C()
+    }
+    fun test() {
+        <caret>Companion.create()
+    }
+}

idea/testData/inspectionsLocal/redundantCompanionReference/directCompanion.kt.after

@@ -0,0 +1,8 @@
+class C {
+    companion object {
+        fun create() = C()
+    }
+    fun test() {
+        create()
+    }
+}

idea/testData/inspectionsLocal/redundantCompanionReference/functionReference.kt

@@ -0,0 +1,8 @@
+// PROBLEM: none
+class C {
+    companion object {
+        fun foo() {}
+    }
+}
+
+fun test() = C.<caret>Companion::foo

idea/testData/inspectionsLocal/redundantCompanionReference/notCompanion.kt

@@ -0,0 +1,10 @@
+// PROBLEM: none
+class C {
+    companion object {
+        fun create() = C()
+    }
+}
+
+fun test() {
+    <caret>C.create()
+}

idea/testData/inspectionsLocal/redundantCompanionReference/onlyCompanion.kt

@@ -0,0 +1,10 @@
+// PROBLEM: none
+class C {
+    companion object {
+        fun create() = C()
+    }
+}
+
+fun test() {
+    C.<caret>Companion
+}