Move Overview-specific flags to a separate aconfig file

This is to keep the main launcher aconfig file more organized and easier to read and aligned with gantry namespace.

Bug: 349534860
Change-Id: Ib21fbac38ed0564fa481fce3a2da9a9b8c1a7139
Flag: EXEMPT - moving flags to another file
Test: EXEMPT - moving flags to another file
diff --git a/aconfig/launcher_overview.aconfig b/aconfig/launcher_overview.aconfig
new file mode 100644
index 0000000..f9327fe
--- /dev/null
+++ b/aconfig/launcher_overview.aconfig
@@ -0,0 +1,23 @@
+package: "com.android.launcher3"
+container: "system_ext"
+
+flag {
+    name: "enable_grid_only_overview"
+    namespace: "launcher_overview"
+    description: "Enable a grid-only overview without a focused task."
+    bug: "257950105"
+}
+
+flag {
+    name: "enable_overview_icon_menu"
+    namespace: "launcher_overview"
+    description: "Enable updated overview icon and menu within task."
+    bug: "257950105"
+}
+
+flag {
+    name: "enable_refactor_task_thumbnail"
+    namespace: "launcher_overview"
+    description: "Enables rewritten version of TaskThumbnailViews in Overview"
+    bug: "331753115"
+}