Include new high-resolution icons

[gudvinr]

Is your feature request related to a problem? Please describe.

Currently included icon is low-res and ugly. It doesn't scale and doesn't work well in current predominantly monochrome trays.

Describe the solution you'd like

Jellyfin has UX repo with icons.

You can use SVG icon for tray:

• icon-transparent-white.svg which can be colored depending on color theme
• icon-transparent.svg which is just regular colored icon

As fallback, any png icon can be included, e.g. modern-install.png.

SVG can be enabled with python-cairosvg:

image = io.BytesIO(svg2png(url=get_resource("icon-transparent-white.svg"), output_height=40, output_width=40))
icon.icon = Image.open(image)

Something like darkdetect or self-made trickery can be used to determine value of negate_colors argument of svg2png and switch white icon depending on user theme.