Allow 'Ctrl-Enter' to be used to send a message

[uhoreg]

in addition to 'Enter'. As suggested by Poulad at https://matrix.to/#/!cURbafjkfsMDVwdRDQ:matrix.org/$15048789704490836xMIEa:matrix.org

[richvdh]

it does already

[poulad]

No. I meant giving user the option to change keys in this format:

• Enter : Make line breaks within message text
• Ctrl + Enter: Send message

[poulad]

@uhoreg could you modify the title?

[poulad]

Here is an example of 2 different options for it. Image from Telegram's web app UI:

[poulad]

@lampholder now you closed #5006, please keep this one open

[theowen]

@richvdh I don't think this should be closed yet

[uhoreg]

@theowen #5006 is the issue to follow for allowing configuration of what Enter does