add +show-config action to print out the config from the cli

src/cli/action.zig

@@ -8,6 +8,7 @@ const version = @import("version.zig");
 const list_keybinds = @import("list_keybinds.zig");
 const list_themes = @import("list_themes.zig");
 const list_colors = @import("list_colors.zig");
+const show_config = @import("show_config.zig");
 
 /// Special commands that can be invoked via CLI flags. These are all
 /// invoked by using `+<action>` as a CLI flag. The only exception is
@@ -31,6 +32,9 @@ pub const Action = enum {
     /// List named RGB colors
     @"list-colors",
 
+    /// Dump the config to stdout
+    @"show-config",
+
     pub const Error = error{
         /// Multiple actions were detected. You can specify at most one
         /// action on the CLI otherwise the behavior desired is ambiguous.
@@ -119,6 +123,7 @@ pub const Action = enum {
             .@"list-keybinds" => try list_keybinds.run(alloc),
             .@"list-themes" => try list_themes.run(alloc),
             .@"list-colors" => try list_colors.run(alloc),
+            .@"show-config" => try show_config.run(alloc),
         };
     }