[FL-2844] desktop: removing slideshow file when leaving slideshow view (#1762)

* [FL-2844] desktop: removing slideshow file when leaving slideshow view; vscode: fix for BM port fetcher; fap api: more symbols for LL
* desktop: actually removing slideshow file
* desktop: moved slideshow removal to scene code; fbt: better blackmagic device handling
* fbt: disabled pagination for gdb
* vscode: restored blackmagic command line
* fbt: fixed debug_other target; added debug_other_blackmagic
* furi: added furi_thread_suspend API group; fixed null-pointer deref for thread name; cleaned up RTOS config
* furi: changed thread state check to eTaskGetState

furi/core/thread.h

@@ -236,6 +236,25 @@ size_t furi_thread_stdout_write(const char* data, size_t size);
  */
 int32_t furi_thread_stdout_flush();
 
+/** Suspend thread
+ * 
+ * @param thread_id thread id
+ */
+void furi_thread_suspend(FuriThreadId thread_id);
+
+/** Resume thread
+ * 
+ * @param thread_id thread id
+ */
+void furi_thread_resume(FuriThreadId thread_id);
+
+/** Get thread suspended state
+ * 
+ * @param thread_id thread id
+ * @return true if thread is suspended
+ */
+bool furi_thread_is_suspended(FuriThreadId thread_id);
+
 #ifdef __cplusplus
 }
 #endif