feat(ui): enable multiple keyboard layouts for "paste text" to remote host (#405)

* Enable multiple keyboard layouts for paste text from host

* Trema is the more robust method for capital umlauts

* Improve error handling and pre-loading

* Improve accent handling

* Remove obscure Alt-Gr keys, unsure if they are supported everywhere

* Add Swiss French

* Change line ordering

* Fix whitespace

* Add French (France)

* Add English (UK)

* Add Swedish

* Add Spanish

* Fix fr_FR special characters

* Add more keys to Spanish

* Remove default value shift: false

* Add Norwegian

* Operator precedence 🤦

* Add Italian

* Add Czech

* Move guard statements outside of loop

* Move language name definitions into the keyboard layout files

* Change the locale names to their native language

German->Deutsch et. al.

* Move hold key handling into Go backend analogous to https://www.kernel.org/doc/Documentation/usb/gadget_hid.txt

* Remove trailing whitespace

* Fix

* Add Belgisch Nederlands

* Add JSONRPC handling

* Use useSettingsStore

* Revert "Move hold key handling into Go backend analogous to https://www.kernel.org/doc/Documentation/usb/gadget_hid.txt"

This reverts commit 146cee9309ca7a8b7ab103e955f3fcc38a4bc692.

* Move FeatureFlag to navigation

* Fix: flip Y/Z

* Add useEffect dependencies

* Embolden language

* Add to useCallback dependencies

---------

Co-authored-by: Marc Brooks <IDisposable@gmail.com>

ui/src/routes/devices.$id.settings.tsx

@@ -1,6 +1,7 @@
 import { NavLink, Outlet, useLocation } from "react-router-dom";
 import {
   LuSettings,
+  LuMouse,
   LuKeyboard,
   LuVideo,
   LuCpu,
@@ -19,6 +20,7 @@ import { LinkButton } from "@/components/Button";
 import LoadingSpinner from "@/components/LoadingSpinner";
 import { useUiStore } from "@/hooks/stores";
 import useKeyboard from "@/hooks/useKeyboard";
+import { FeatureFlag } from "../components/FeatureFlag";
 
 import { cx } from "../cva.config";
 
@@ -149,11 +151,25 @@ export default function SettingsRoute() {
                     className={({ isActive }) => (isActive ? "active" : "")}
                   >
                     <div className="flex items-center gap-x-2 rounded-md px-2.5 py-2.5 text-sm transition-colors hover:bg-slate-100 dark:hover:bg-slate-700 in-[.active]:bg-blue-50 in-[.active]:text-blue-700! md:in-[.active]:bg-transparent dark:in-[.active]:bg-blue-900 dark:in-[.active]:text-blue-200! dark:md:in-[.active]:bg-transparent">
-                      <LuKeyboard className="h-4 w-4 shrink-0" />
+
+                      <LuMouse className="h-4 w-4 shrink-0" />
                       <h1>Mouse</h1>
                     </div>
                   </NavLink>
                 </div>
+                <FeatureFlag minAppVersion="0.4.0" name="Paste text">
+                  <div className="shrink-0">
+                    <NavLink
+                      to="keyboard"
+                      className={({ isActive }) => (isActive ? "active" : "")}
+                    >
+                      <div className="flex items-center gap-x-2 rounded-md px-2.5 py-2.5 text-sm transition-colors hover:bg-slate-100 dark:hover:bg-slate-700 [.active_&]:bg-blue-50 [.active_&]:!text-blue-700 md:[.active_&]:bg-transparent dark:[.active_&]:bg-blue-900 dark:[.active_&]:!text-blue-200 dark:md:[.active_&]:bg-transparent">
+                        <LuKeyboard className="h-4 w-4 shrink-0" />
+                        <h1>Keyboard</h1>
+                      </div>
+                    </NavLink>
+                  </div>
+                </FeatureFlag>
                 <div className="shrink-0">
                   <NavLink
                     to="video"