help: add a reference sheet for the game's default keyboard binds (#569)

Fixes #253

I used https://archie-adams.github.io/keyboard-shortcut-map-maker/

src/assets/translations/en-US.json

@@ -69,6 +69,7 @@
   "header_updateAvailable": "Update Available!",
   "help_button_downloadPackage": "Download Support Package",
   "help_button_openLogFolder": "Open Log Folder",
+  "help_button_defaultKeybinds": "Default Keybinds",
   "help_button_reportGameIssue": "Report Game Issue",
   "help_button_reportLauncherIssue": "Report Launcher Issue",
   "help_description_createAnIssue": "You can either ask a question on our Discord, or create a GitHub issue with as much detail as possible.",

src/routes/Help.svelte

@@ -7,6 +7,7 @@
   import { onMount } from "svelte";
   import { appConfigDir } from "@tauri-apps/api/path";
   import { _ } from "svelte-i18n";
+  import { navigate } from "svelte-navigator";
 
   let appDir: string | undefined = undefined;
   let downloadingPackage = false;
@@ -46,6 +47,12 @@
         }}>{$_("help_button_openLogFolder")}</Button
       >
     {/if}
+    <Button
+      class="flex items-center border-solid rounded bg-white hover:bg-orange-400 text-sm text-slate-900 font-semibold px-4 py-2"
+      href="https://raw.githubusercontent.com/open-goal/launcher/refs/heads/main/docs/default-keybinds.png"
+      target="_blank"
+      rel="noreferrer noopener">{$_("help_button_defaultKeybinds")}</Button
+    >
   </div>
   <p class="mt-3 text-sm">
     {$_("help_description_createAnIssue")}