Add a setting to not submit on enter, but require control+enter instead.

Add a setting to not submit on enter, but require control+enter instead. The regular enter should then just insert a newline.

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| Field | Value |
| --- | --- |
| App version | 1.0.19 |
| OS | Windows 10.0.22631 |
| Theme | Fox |
| Path | /chat |
| Tenure | Day 1 |

Start at the /chat entry point and trace how Enter currently submits messages and how settings are presented. Add a setting that makes Enter insert a newline and Control+Enter submit, then verify both key combinations and the setting's enabled and disabled behavior in the chat interface.

索引モデルが issue の本文から書いたものです。