MPU Hal (#1492)

* Furi HAL: memory protection unit
* Core: prohibit NULL dereferencing, even for reads.
* Applications: fix NULL dereference
* Core: stack protection by MPU
* MPU: stack region alignment
* Apps: fix null pointer dereferences
* Threads: fix non-null arg check
* Desktop settings: fix null pointer dereference
* Core: documented null-check hack
* Fix null dereference issues
* Apps: args check
* Core: naming fixes
* format code
* Core: remove NONNULL specifier
* FurHal: move MPU initialization to begining, fix enum naming

Co-authored-by: あく <alleteam@gmail.com>

applications/lfrfid/lfrfid_app.cpp

@@ -74,7 +74,7 @@ void LfRfidApp::run(void* _args) {
 
     make_app_folder();
 
-    if(strlen(args)) {
+    if(args && strlen(args)) {
         uint32_t rpc_ctx_ptr = 0;
         if(sscanf(args, "RPC %lX", &rpc_ctx_ptr) == 1) {
             rpc_ctx = (RpcAppSystem*)rpc_ctx_ptr;