feat: add cpp folder icons

[jorduino]

Description

Added a folder icon for C and C++

Fixes #3087

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[PKief]

Thanks for the contribution. I've reviewed the icons, and I've the feeling that the motifs are still a little bit small compared to our other folder icons. So maybe we can adjust the design here a little bit so that it fits better.

Additionally, the c++ icon looks different on the file and for the folders:

Usually, we try to have some consistent styling here.

[jorduino]

I definitely agree with what you're saying about the C++ folder, and personally I think the C# folder is worse at adhering to the file icon design.

The problem I was running into is trying to align the ++ to the middle of the C while keeping it aligned to the grid, but I found a compromise. I aligned the ++ to the grid and to the middle of the C, but increased the C by 1 pixel (now exactly half of the scale of the file icon).

This puts the C slightly off of the grid, but to my eye it doesn't add any blur at 16x16. Please let me know what you think and I will update the C and C# folders to align with this design as well if it works

[jorduino]

I updated the C and C# folder icons and I think they look better now.

The C glyph looks ever so slightly blurrier, but I don't think it's too bad at this scale:

The folder icons still don't look exactly the same as the file icons, but I couldn't find anything that looked better at that scale.

This is using the same icon for the file just scaled down by 0.5x:

And here at full scale, obviously way too big:

The problem is the ++ in the file icon is 1px wide and can't be scaled down any without losing clarity. Hopefully these icons work, let me know what you think.

[PKief]

Sorry for the late response, I'm little bit busy at the moment. I need to spend some time to play around with your suggestions, I'm not sure if we can merge it like that. But it's on my list and I'll come back to it when there's little more time. Keep your PR open for now, it has potential.

[ProgramerXYZ]

• the icon does not work i mean the icon for the "cpp" folder

[lucas-labs]

@ProgramerXYZ This PR is still open and not merged yet.

[SayanShankhari]

Are these ok?
Use close to official colors btw.
If granted, i'll shorten the svg code.

@PKief should i have to move these ones by one pixel up too?

[PKief]

@SayanShankhari yes following the existing pattern would be better, moving one pixel up will be better. However, I don't like the icon proposals yet, The plus icons don't look nice right now

[SayanShankhari]

well, do you have any recommendation for the double plus?
i was thinking about this one, but it reduces room for C, also does deviate from the original one.

Or would you prefer Cpp instead of C++
Also i think clarity gets more precedence than using exact same icon for file and folder.

Or, how about this, although the two pluses (3x3) reduces to dots in smol preview.

[SayanShankhari]

idk, it looks good to me, but i'd suggest to change the original icon colors