Add the basic edit monitor logic

The edit monitor uses the watchdog lib to montior any file changes
(create, modify, move, delete) under
a specific directory, create a edit log based on the file change event
and send the edit log to Sawmill through clearcut.

Test: Atest edit_monitor_test
Bug: 365617369
Change-Id: Ib6e04a43e4dd78ca58c7ccdef56fb4f6bda6e7a5
diff --git a/tools/edit_monitor/Android.bp b/tools/edit_monitor/Android.bp
index 3497821..fe4f213 100644
--- a/tools/edit_monitor/Android.bp
+++ b/tools/edit_monitor/Android.bp
@@ -35,6 +35,12 @@
     pkg_path: "edit_monitor",
     srcs: [
         "daemon_manager.py",
+        "edit_monitor.py",
+    ],
+    libs: [
+        "asuite_cc_client",
+        "edit_event_proto",
+        "watchdog",
     ],
 }
 
@@ -53,6 +59,21 @@
     },
 }
 
+python_test_host {
+    name: "edit_monitor_test",
+    main: "edit_monitor_test.py",
+    pkg_path: "edit_monitor",
+    srcs: [
+        "edit_monitor_test.py",
+    ],
+    libs: [
+        "edit_monitor_lib",
+    ],
+    test_options: {
+        unit_test: true,
+    },
+}
+
 python_binary_host {
     name: "edit_monitor",
     pkg_path: "edit_monitor",