feat(Archive): Adds multiple file selection

Allows selecting both files and folders at the same time to perform
actions on. Selected files are either moved to clipboard for the
`Cut`/`Copy` and `Paste` actions, or deleted with `Delete`. `Rename`
action still only works on single file, but that file can be in the
multi selection.

lib/momentum/settings.c

@@ -29,6 +29,7 @@ MomentumSettings momentum_settings = {
     .sort_dirs_first = true, // ON
     .show_hidden_files = false, // OFF
     .show_internal_tab = false, // OFF
+    .selection_indicator_style = SelectionIndicatorStylePlus, // +
     .favorite_timeout = 0, // OFF
     .dark_mode = false, // OFF
     .rgb_backlight = false, // OFF
@@ -98,6 +99,7 @@ static const struct {
     {setting_bool(sort_dirs_first)},
     {setting_bool(show_hidden_files)},
     {setting_bool(show_internal_tab)},
+    {setting_enum(selection_indicator_style, SelectionIndicatorStyleCount)},
     {setting_uint(favorite_timeout, 0, 60)},
     {setting_bool(dark_mode)},
     {setting_bool(rgb_backlight)},

lib/momentum/settings.h

@@ -54,6 +54,13 @@ typedef union __attribute__((packed)) {
     uint32_t value;
 } ScreenFrameColor;
 
+typedef enum {
+    SelectionIndicatorStylePlus,
+    SelectionIndicatorStyleStar,
+    SelectionIndicatorStyleDash,
+    SelectionIndicatorStyleCount,
+} SelectionIndicatorStyle;
+
 typedef struct {
     char asset_pack[ASSET_PACKS_NAME_LEN];
     uint32_t anim_speed;
@@ -77,6 +84,7 @@ typedef struct {
     bool sort_dirs_first;
     bool show_hidden_files;
     bool show_internal_tab;
+    SelectionIndicatorStyle selection_indicator_style;
     uint32_t favorite_timeout;
     bool dark_mode;
     bool rgb_backlight;