Add context menu entry in log panel for toggling lines limit

[rchl]

Toggles the limit per window rather than globally. I've assumed it's better that way as it will "limit the damage" if someone leaves it disabled for a long period of time.

Resolves #1810

[jwortmann]

So if you disable the limit and forget about it, the then it just keeps growing until you're out of memory?

I guess a better solution in that case would be to write the LSP logs into a log file to disk. Or open an input field to ask the user for a different line limit.

[rchl]

The use case is to be able to inspect logs even when server prints a ton of stuff. We can think of alternate solutions but it has to stay simple both from the code complexity and user UI perspective so I think any UI inputs or external files are out of scope.

We could for example have a checkbox that rises the limit to 10000 lines or something. Just not sure how would we communicate that in a concise way through a menu item.

[predragnikolic]

To me this looks good.

[jwortmann]

We could for example have a checkbox that rises the limit to 10000 lines or something. Just not sure how would we communicate that in a concise way through a menu item.

Then just do it that way, without communicating this limit to the user. 10000 lines should be sufficient and basically equivalent to "no limit" from the user perspective.

This PR right now is a memory leak, disguised as a feature.

[rchl]

for the record, rust-analyzer added about 900 lines on init for the rust-analyzer project itself.