Refactored to use selection grid during round (#348)

* Added wrapping to selection grid

* Added return value to on_selection_changed to allow aborting on wrap

* Extracted button code to button.c/.h

* Bounds checking changes for selection_grid_move_selection_horz()

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Rickey <ric@rf3.xyz>

source/button.c

@@ -0,0 +1,29 @@
+#include "button.h"
+
+#include "audio_utils.h"
+#include "soundbank.h"
+
+#include <tonc.h>
+
+void button_set_highlight(Button* button, bool highlight)
+{
+    if (button == NULL)
+        return;
+
+    u16 set_color = highlight ? BTN_HIGHLIGHT_COLOR : pal_bg_mem[button->button_pal_idx];
+
+    memset16(&pal_bg_mem[button->border_pal_idx], set_color, 1);
+}
+
+void button_press(Button* button)
+{
+    if (button == NULL || button->on_pressed == NULL ||
+        (button->can_be_pressed != NULL && !button->can_be_pressed()))
+    {
+        return;
+    }
+
+    play_sfx(SFX_BUTTON, MM_BASE_PITCH_RATE, BUTTON_SFX_VOLUME);
+
+    button->on_pressed();
+}