Add adb devices parser

Add a parser of `adb device -l` output, to extract a list of devices
with their serial, state and model.

PR #3005 <https://github.com/Genymobile/scrcpy/pull/3005>

app/src/adb/adb_device.c

@@ -0,0 +1,26 @@
+#include "adb_device.h"
+
+#include <stdlib.h>
+
+void
+sc_adb_device_destroy(struct sc_adb_device *device) {
+    free(device->serial);
+    free(device->state);
+    free(device->model);
+}
+
+void
+sc_adb_device_move(struct sc_adb_device *dst, struct sc_adb_device *src) {
+    *dst = *src;
+    src->serial = NULL;
+    src->state = NULL;
+    src->model = NULL;
+}
+
+void
+sc_adb_devices_destroy_all(struct sc_adb_device *devices, size_t count) {
+    for (size_t i = 0; i < count; ++i) {
+        sc_adb_device_destroy(&devices[i]);
+    }
+}
+