GUI: Add marquee 'Text Scroll' option (#363)

* GUI: Add marquee 'Text Scroll' option

- Adds the tiny `Text Scroll` option under `MNTM > Interface > General` to either use the standard scroll, or a new marquee style back and forth on any scrollable text.
- `elements_scrollable_text_line_centered` renamed to `elements_scrollable_text_line_ex` to be more general. Has `bool marquee`.

* Unnecessary switch here

* Apply setting internally

* Revert a few usages

* Update changelog

* Last thing

---------

Co-authored-by: Willy-JL <49810075+Willy-JL@users.noreply.github.com>

lib/momentum/settings.c

@@ -32,6 +32,7 @@ MomentumSettings momentum_settings = {
     .show_internal_tab = false, // OFF
     .browser_path_mode = BrowserPathOff, // OFF
     .favorite_timeout = 0, // OFF
+    .scroll_marquee = false, // OFF
     .dark_mode = false, // OFF
     .rgb_backlight = false, // OFF
     .butthurt_timer = 21600, // 6 H
@@ -103,6 +104,7 @@ static const struct {
     {setting_bool(show_internal_tab)},
     {setting_enum(browser_path_mode, BrowserPathModeCount)},
     {setting_uint(favorite_timeout, 0, 60)},
+    {setting_bool(scroll_marquee)},
     {setting_bool(dark_mode)},
     {setting_bool(rgb_backlight)},
     {setting_uint(butthurt_timer, 0, 172800)},