fw/shell/sdk/prefs: fix build by adding highlight color prefs

Signed-off-by: Joshua Jun <joshuajun@proton.me>

Author: jplexer

src/fw/shell/sdk/prefs.c

@@ -277,3 +277,19 @@ UnitsDistance shell_prefs_get_units_distance(void) {
 }
 
 #endif
+
+GColor shell_prefs_get_settings_menu_highlight_color(void) {
+  return PBL_IF_COLOR_ELSE(GColorCobaltBlue, GColorBlack);
+}
+
+void shell_prefs_set_settings_menu_highlight_color(GColor color) {
+  // Not used in SDK shell
+}
+
+GColor shell_prefs_get_apps_menu_highlight_color(void) {
+  return PBL_IF_COLOR_ELSE(GColorVividCerulean, GColorBlack);
+}
+
+void shell_prefs_set_apps_menu_highlight_color(GColor color) {
+  // Not used in SDK shell
+}