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

lib/app-scened-template/view_modules/popup_vm.cpp

@@ -0,0 +1,54 @@
+#include "popup_vm.h"
+PopupVM::PopupVM() {
+    popup = popup_alloc();
+}
+
+PopupVM::~PopupVM() {
+    popup_free(popup);
+}
+
+View* PopupVM::get_view() {
+    return popup_get_view(popup);
+}
+
+void PopupVM::clean() {
+    set_callback(NULL);
+    set_context(NULL);
+    set_header(NULL, 0, 0, AlignLeft, AlignBottom);
+    set_text(NULL, 0, 0, AlignLeft, AlignBottom);
+    set_icon(0, 0, NULL);
+    disable_timeout();
+    set_timeout(1000);
+}
+
+void PopupVM::set_callback(PopupCallback callback) {
+    popup_set_callback(popup, callback);
+}
+
+void PopupVM::set_context(void* context) {
+    popup_set_context(popup, context);
+}
+
+void PopupVM::set_header(const char* text, uint8_t x, uint8_t y, Align horizontal, Align vertical) {
+    popup_set_header(popup, text, x, y, horizontal, vertical);
+}
+
+void PopupVM::set_text(const char* text, uint8_t x, uint8_t y, Align horizontal, Align vertical) {
+    popup_set_text(popup, text, x, y, horizontal, vertical);
+}
+
+void PopupVM::set_icon(int8_t x, int8_t y, const Icon* icon) {
+    popup_set_icon(popup, x, y, icon);
+}
+
+void PopupVM::set_timeout(uint32_t timeout_in_ms) {
+    popup_set_timeout(popup, timeout_in_ms);
+}
+
+void PopupVM::enable_timeout() {
+    popup_enable_timeout(popup);
+}
+
+void PopupVM::disable_timeout() {
+    popup_enable_timeout(popup);
+}