add file browser to movement, remove old app

movement/filesystem.c

@@ -117,9 +117,11 @@ bool filesystem_init(void) {
     // reformat if we can't mount the filesystem
     // this should only happen on the first boot
     if (err) {
+        printf("Ignore that error! Formatting filesystem...\n");
         err = lfs_format(&lfs, &cfg);
         if (err) return false;
         err = lfs_mount(&lfs, &cfg) == LFS_ERR_OK;
+        printf("Filesystem mounted with %d bytes free.\n", filesystem_get_free_space());
     }
 
     return err == LFS_ERR_OK;

movement/movement.c

@@ -254,6 +254,8 @@ void app_init(void) {
     movement_state.next_available_backup_register = 4;
     _movement_reset_inactivity_countdown();
 
+    filesystem_init();
+
 #if __EMSCRIPTEN__
     int32_t time_zone_offset = EM_ASM_INT({
         return -new Date().getTimezoneOffset();
@@ -450,7 +452,7 @@ bool app_loop(void) {
 #else
         read(0, line, 256);
 #endif
-        if (strlen(line)) printf(line);
+        if (strlen(line)) filesystem_process_command(line);
     }
 
     event.subsecond = 0;