Add NSFW/SFW board filter to /all/ board page on mobile (#1071)

* feat(board-buttons): add NSFW/SFW filter to /all/ board page on mobile

* refactor(board-buttons): extract MobileAllFeedFilter padding to CSS class

src/app.tsx

@@ -25,7 +25,7 @@ import {
   isValidModRoute,
 } from './lib/utils/route-utils';
 import styles from './app.module.css';
-import { DesktopBoardButtons, MobileBoardButtons } from './components/board-buttons';
+import { DesktopBoardButtons, MobileAllFeedFilter, MobileBoardButtons } from './components/board-buttons';
 import Board from './views/board';
 import Blotter from './views/blotter';
 import Catalog from './views/catalog';
@@ -153,6 +153,7 @@ const BoardLayout = () => {
             <>
               <MobileBoardButtons />
               <PostForm key={key} />
+              {isInAllView && <MobileAllFeedFilter />}
             </>
           ))
         : (subplebbitAddress || isInAllView || isInModView || isInSubscriptionsView || pendingPost?.subplebbitAddress || isOnModQueueRoute) && (