Add scrollToBottomOnMessageSent setting

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

src/settings/Settings.ts

@@ -317,6 +317,11 @@ export const SETTINGS: {[setting: string]: ISetting} = {
         displayName: _td('Show line numbers in code blocks'),
         default: true,
     },
+    "scrollToBottomOnMessageSent": {
+        supportedLevels: LEVELS_ACCOUNT_SETTINGS,
+        displayName: _td('Jump to the bottom of the timeline when you send a message'),
+        default: true,
+    },
     "Pill.shouldShowPillAvatar": {
         supportedLevels: LEVELS_ACCOUNT_SETTINGS,
         displayName: _td('Show avatars in user and room mentions'),