Add quick fixes for mod/rem migration

- Remove 'operator' modifier
 - Rename operator 'mod/modAssign' to 'rem/remAssign'

idea/testData/quickfix/modifiers/removeModifierFromOperatorMod.kt

@@ -0,0 +1,5 @@
+// Remove 'operator' modifier
+
+object A {
+    operator<caret> fun mod(x: Int) {}
+}

idea/testData/quickfix/modifiers/removeModifierFromOperatorMod.kt.after

@@ -0,0 +1,5 @@
+// Remove 'operator' modifier
+
+object A {
+    <caret>fun mod(x: Int) {}
+}

idea/testData/quickfix/modifiers/removeModifierFromOperatorModAssign.kt

@@ -0,0 +1,5 @@
+// Remove 'operator' modifier
+
+object A {
+    operator<caret> fun modAssign(x: Int) {}
+}

idea/testData/quickfix/modifiers/removeModifierFromOperatorModAssign.kt.after

@@ -0,0 +1,5 @@
+// Remove 'operator' modifier
+
+object A {
+    <caret>fun modAssign(x: Int) {}
+}

idea/testData/quickfix/renameToRem/modAsExtension.kt

@@ -0,0 +1,9 @@
+// "Rename to 'rem'" "true"
+
+object A
+operator<caret> fun A.mod(x: Int) {}
+
+fun test() {
+    A.mod(3)
+    A % 2
+}

idea/testData/quickfix/renameToRem/modAsExtension.kt.after

@@ -0,0 +1,9 @@
+// "Rename to 'rem'" "true"
+
+object A
+operator<caret> fun A.rem(x: Int) {}
+
+fun test() {
+    A.rem(3)
+    A % 2
+}

idea/testData/quickfix/renameToRem/modAsMember.kt

@@ -0,0 +1,12 @@
+// "Rename to 'rem'" "true"
+
+object Rem {
+    operator<caret> fun mod(x: Int) {}
+    operator fun modAssign(x: Int) {}
+}
+
+fun test() {
+    Rem % 1
+    Rem.mod(1)
+    Rem.modAssign(1)
+}

idea/testData/quickfix/renameToRem/modAsMember.kt.after

@@ -0,0 +1,12 @@
+// "Rename to 'rem'" "true"
+
+object Rem {
+    operator fun rem(x: Int) {}
+    operator fun modAssign(x: Int) {}
+}
+
+fun test() {
+    Rem % 1
+    Rem.rem(1)
+    Rem.modAssign(1)
+}

idea/testData/quickfix/renameToRem/modAssignAsMember.kt

@@ -0,0 +1,14 @@
+// "Rename to 'remAssign'" "true"
+
+object Rem {
+    operator fun mod(x: Int) {}
+    operator<caret> fun modAssign(x: Int) {}
+}
+
+fun test() {
+    Rem % 1
+    Rem.mod(1)
+    Rem.modAssign(1)
+    val c = Rem
+    c %= 1
+}

idea/testData/quickfix/renameToRem/modAssignAsMember.kt.after

@@ -0,0 +1,14 @@
+// "Rename to 'remAssign'" "true"
+
+object Rem {
+    operator fun mod(x: Int) {}
+    operator fun remAssign(x: Int) {}
+}
+
+fun test() {
+    Rem % 1
+    Rem.mod(1)
+    Rem.remAssign(1)
+    val c = Rem
+    c %= 1
+}