Bomb Direction (#2435)

Resolves #2434 

## Description:

Allows bomb direction to be inverted by pressing a hotkey - currently
"U".

**Check the issue for screenshots / videos.**

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

w.o.n

---------

Co-authored-by: Evan <evanpelle@gmail.com>
Co-authored-by: iamlewis <lewismmmm@gmail.com>

src/client/HelpModal.ts

@@ -138,6 +138,10 @@ export class HelpModal extends LitElement {
                 <td>${this.renderKey(keybinds.toggleView)}</td>
                 <td>${translateText("help_modal.action_alt_view")}</td>
               </tr>
+              <tr>
+                <td><span class="key">U</span></td>
+                <td>${translateText("help_modal.bomb_direction")}</td>
+              </tr>
               <tr>
                 <td>
                   <div class="scroll-combo-horizontal">