Picopass: factory key support, app rename and move to NFC category, minor code cleanup (#2417)

* message on successful card write
* auth using factory key
* auth using factory default
* factory default screen
* write standard iclass key
* pass block explicitly
* Fix array indexing, add empty detection
* PicoPass: rename app and move to NFC group, minor code cleanup

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

applications/plugins/picopass/picopass_i.h

@@ -81,3 +81,15 @@ void picopass_blink_start(Picopass* picopass);
 void picopass_blink_stop(Picopass* picopass);
 
 void picopass_show_loading_popup(void* context, bool show);
+
+/** Check if memory is set to pattern
+ *
+ * @warning    zero size will return false
+ *
+ * @param[in]  data     Pointer to the byte array
+ * @param[in]  pattern  The pattern
+ * @param[in]  size     The byte array size
+ *
+ * @return     True if memory is set to pattern, false otherwise
+ */
+bool picopass_is_memset(const uint8_t* data, const uint8_t pattern, size_t size);