Add tree icon

[lscheibel]

I needed this one for a soundboard.

[karsa-mistmere]

All in all nice, but I think the trunk needs to be taller, as deciduous trees' trunks usually are, otherwise it looks a little more like a shrub than it does a tree:

[lscheibel]

I like the last one, I thought it looked a bit like cotton candy but I think in context it works. I updated the PR

[ericfennis]

@lscheibel @karsa-mistmere Nice, I've one suggestion I'm curious what you think of it.
Maybe rename this to tree-broadleaf and create add another icon for tree-pine. I can image sometimes the pine tree is for some people more obvious choice.

[karsa-mistmere]

@ericfennis Yeah, totally agree, there should be different kinds of trees. There's actually already an issue in progress: #599
I would maybe name this tree-deciduous (but it definitely needs it at least as a tag).

Here's a mashup overview of current design proposals by @lscheibel and myself.

[ericfennis]

@karsa-mistmere I like the top row. But with the current tree-deciduous icon.

[karsa-mistmere]

@ericfennis: I guess that can work, but I actually quite grew to like the top row version, it's quite unmistakable and I think @lscheibel is right that the second row version does in fact look a bit like cotton candy.

In fact, I think we could maybe also add @lscheibel's original design as shrub. 😁

[ericfennis]

Yeah that's true, maybe keep the branches.