fix(indexing): split indexing logic into 'api' and 'core' modules

utilities/shared/src/main/java/com/itsaky/androidide/progress/IProgressIndicator.kt

@@ -0,0 +1,45 @@
+/*
+ *  This file is part of AndroidIDE.
+ *
+ *  AndroidIDE is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  AndroidIDE is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.itsaky.androidide.progress
+
+import androidx.annotation.FloatRange
+
+/**
+ * A progress indicator reports progress of a specific task.
+ *
+ * @author Akash Yadav
+ */
+interface IProgressIndicator {
+
+  /**
+   * Called when the task begins its execution.
+   */
+  fun onStart()
+
+  /**
+   * Called each time the task progresses.
+   *
+   * @param progress The progress of the task. Must be a value between 0 (start) and 1 (finish).
+   */
+  fun onProgress(@FloatRange(from = 0.0, to = 1.0) progress: Float)
+
+  /**
+   * Called when the task finishes its execution.
+   */
+  fun onFinish()
+}