feat: add gitui config

gitui/key_bindings.ron

@@ -0,0 +1,40 @@
+// Note:
+// If the default key layout is lower case,
+// and you want to use `Shift + q` to trigger the exit event,
+// the setting should like this `exit: Some(( code: Char('Q'), modifiers: "SHIFT")),`
+// The Char should be upper case, and the modifier should be set to "SHIFT".
+//
+// Note:
+// find `KeysList` type in src/keys/key_list.rs for all possible keys.
+// every key not overwritten via the config file will use the default specified there
+(
+    open_help: Some(( code: F(1), modifiers: "")),
+
+    move_left: Some(( code: Char('h'), modifiers: "")),
+    move_right: Some(( code: Char('l'), modifiers: "")),
+    move_up: Some(( code: Char('k'), modifiers: "")),
+    move_down: Some(( code: Char('j'), modifiers: "")),
+    
+    popup_up: Some(( code: Char('p'), modifiers: "CONTROL")),
+    popup_down: Some(( code: Char('n'), modifiers: "CONTROL")),
+    page_up: Some(( code: Char('b'), modifiers: "CONTROL")),
+    page_down: Some(( code: Char('f'), modifiers: "CONTROL")),
+    home: Some(( code: Char('g'), modifiers: "")),
+    end: Some(( code: Char('G'), modifiers: "SHIFT")),
+    shift_up: Some(( code: Char('K'), modifiers: "SHIFT")),
+    shift_down: Some(( code: Char('J'), modifiers: "SHIFT")),
+
+    edit_file: Some(( code: Char('I'), modifiers: "SHIFT")),
+
+    status_reset_item: Some(( code: Char('U'), modifiers: "SHIFT")),
+
+    diff_reset_lines: Some(( code: Char('u'), modifiers: "")),
+    diff_stage_lines: Some(( code: Char('s'), modifiers: "")),
+
+    stashing_save: Some(( code: Char('w'), modifiers: "")),
+    stashing_toggle_index: Some(( code: Char('m'), modifiers: "")),
+
+    stash_open: Some(( code: Char('l'), modifiers: "")),
+
+    abort_merge: Some(( code: Char('M'), modifiers: "SHIFT")),
+)