Add Notepad app (#1010)

* easier 'now', start adding text editor

* Adding scrolling to notepad

* Better scrolling

* Better scrolling, off-by-1 bugs

* MVP fit and finish

* Add tiny font and use in Notepad

* Font tweaking, tiny font cursor

* Fix warning

* Format changed files

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Co-authored-by: kallanreed <kallanreed@outlook.com>

firmware/application/rtc_time.cpp

@@ -29,4 +29,15 @@ void on_tick_second() {
     signal_tick_second.emit();
 }
 
+rtc::RTC now() {
+    rtc::RTC datetime;
+    rtcGetTime(&RTCD1, &datetime);
+    return datetime;
+}
+
+rtc::RTC now(rtc::RTC& out_datetime) {
+    rtcGetTime(&RTCD1, &out_datetime);
+    return out_datetime;
+}
+
 } /* namespace rtc_time */