Add focus-visible style for NcCheckboxRadioSwitch

Improve accesibility by making focus indicator visible.

Resolves : nextcloud/photos#1671

Signed-off-by: fenn-cs <fenn25.fn@gmail.com>

src/components/NcCheckboxRadioSwitch/NcCheckboxRadioSwitch.vue

@@ -583,6 +583,10 @@ export default {
 		height: var(--icon-size);
 	}
 
+	&__input:focus-visible + label {
+		outline: 2px solid var(--color-main-text) !important;
+	}
+
 	&__label {
 		display: flex;
 		align-items: center;