Naming and coding style convention, new linter tool. (#945)

* Makefile, Scripts: new linter
* About: remove ID from IC
* Firmware: remove double define for DIVC/DIVR
* Scripts: check folder names too. Docker: replace syntax check with make lint.
* Reformat Sources and Migrate to new file naming convention
* Docker: symlink clang-format-12 to clang-format
* Add coding style guide

applications/lfrfid/helpers/state_sequencer.cpp

@@ -0,0 +1,50 @@
+#include "state_sequencer.h"
+#include "stdio.h"
+
+TickSequencer::TickSequencer() {
+}
+
+TickSequencer::~TickSequencer() {
+}
+
+void TickSequencer::tick() {
+    if(tick_count == list_it->first) {
+        tick_count = 0;
+
+        list_it++;
+        if(list_it == list.end()) {
+            list_it = list.begin();
+        }
+    }
+
+    list_it->second();
+    tick_count++;
+}
+
+void TickSequencer::reset() {
+    list_it = list.begin();
+    tick_count = 0;
+}
+
+void TickSequencer::clear() {
+    list.clear();
+    reset();
+}
+
+void TickSequencer::do_every_tick(uint32_t tick_count, std::function<void(void)> fn) {
+    list.push_back(std::make_pair(tick_count, fn));
+    reset();
+}
+
+void TickSequencer::do_after_tick(uint32_t tick_count, std::function<void(void)> fn) {
+    if(tick_count > 1) {
+        list.push_back(
+            std::make_pair(tick_count - 1, std::bind(&TickSequencer::do_nothing, this)));
+    }
+    list.push_back(std::make_pair(1, fn));
+
+    reset();
+}
+
+void TickSequencer::do_nothing() {
+}