Support inline `code block`s in commit messages, like github

### The feature request

Unlike on github, github desktop does not support markdown inline `code blocks` in commit messages

Here's what this looks like on the website:

### Proposed solution

I suggest that within the commit message input field, anything surrounded with \` is rendered in a monospace font and elsewhere it's rendered as a code block `like this`.

### Additional context

_No response_

Added as also in scope: https://github.com/desktop/desktop/issues/18291

The feature request
I often enclose code parts in backticks when writing commit messages. For example, this is a commit message I just made:

Rename `addChildren` method to `addItems`
Writing backticks takes time, so it would be great if Desktop could support the same CMD/CTRL+E shortcut as GitHub uses.

Proposed solution
Pressing CMD/CTRL+E adds backticks around the selected text

Additional context
No response