GFX EQ App (#2607)

* Make the beginnings of rf3d
* Name change...
* Add mood button
* Remove forced amp settings and add persistent user settings
* Fix options bar layout and SettingsManager
* Make the background paint to black again after opening fq modal
* fix audio/mod/settings and cleaned unneeded parts
* Mapped bars to audio spectrum
* Improved frequency response... still needs work i think
* add on_freqchg to be able to answer to serial frequency change command
* Made calculations for 14 bars to fit screen and little adjustments
* Visual improvements
Co-authored-by: gullradriel

firmware/application/external/gfxeq/main.cpp

@@ -0,0 +1,36 @@
+/*
+ * ------------------------------------------------------------
+ * |  Made by RocketGod                                       |
+ * |  Find me at https://betaskynet.com                       |
+ * |  Argh matey!                                             |
+ * ------------------------------------------------------------
+ */
+
+#include "ui_gfxeq.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::gfxeq {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<gfxEQView>();
+}
+}  // namespace ui::external_app::gfxeq
+
+extern "C" {
+__attribute__((section(".external_app.app_gfxeq.application_information"), used)) application_information_t _application_information_gfxeq = {
+    (uint8_t*)0x00000000,
+    ui::external_app::gfxeq::initialize_app,
+    CURRENT_HEADER_VERSION,
+    VERSION_MD5,
+    "gfxEQ",
+    {0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+     0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+     0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
+    ui::Color::green().v,
+    app_location_t::RX,
+    -1,
+    {'P', 'N', 'F', 'M'},
+    0x00000000,
+};
+
+}  // namespace ui::external_app::gfxeq