Move FPS counter start/stop logs

This will allow to print the same logs for every start/stop call.

PR #3030 <https://github.com/Genymobile/scrcpy/pull/3030>

app/src/fps_counter.c

@@ -117,6 +117,7 @@ sc_fps_counter_start(struct sc_fps_counter *counter) {
         counter->thread_started = true;
     }
 
+    LOGI("FPS counter started");
     return true;
 }
 
@@ -124,6 +125,7 @@ void
 sc_fps_counter_stop(struct sc_fps_counter *counter) {
     set_started(counter, false);
     sc_cond_signal(&counter->state_cond);
+    LOGI("FPS counter stopped");
 }
 
 bool

app/src/input_manager.c

@@ -247,13 +247,9 @@ switch_fps_counter_state(struct sc_fps_counter *fps_counter) {
     // is no ToCToU issue
     if (sc_fps_counter_is_started(fps_counter)) {
         sc_fps_counter_stop(fps_counter);
-        LOGI("FPS counter stopped");
     } else {
-        if (sc_fps_counter_start(fps_counter)) {
-            LOGI("FPS counter started");
-        } else {
-            LOGE("FPS counter starting failed");
-        }
+        sc_fps_counter_start(fps_counter);
+        // Any error is already logged
     }
 }