[Assign plugin] Add Gradle plugin and IDE dependencies for Assignment compiler plugin

libraries/tools/kotlin-gradle-plugin-model/src/common/kotlin/org/jetbrains/kotlin/gradle/model/Assignment.kt

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.model
+
+/**
+ * Entry point for Kotlin Value Container Assignment models.
+ * Represents the description of annotations interpreted by 'kotlin-assignment' plugin.
+ */
+interface Assignment {
+
+    /**
+     * Return a number representing the version of this API.
+     * Always increasing if changed.
+     *
+     * @return the version of this model.
+     */
+    val modelVersion: Long
+
+    /**
+     * Returns the module (Gradle project) name.
+     *
+     * @return the module name.
+     */
+    val name: String
+
+    /**
+     * Return the list of annotations.
+     *
+     * @return the list of annotations.
+     */
+    val annotations: List<String>
+}