Menu icons in Linux are low-resolution

[tanshoku]

As the title says, the icons provided here are only 16x16, which is probably unsuitable for high-dpi displays. Not only this, but some of the icons, such as dictionary and configuration, look really outdated and thus out of place on a modern desktop. I propose some sort of redesign or an adaptation so the menu icons can be sourced from an user's preferred icon pack (ie, using freedesktop standards for sourcing the menu icons if not already), not only the configurator icon, as addressed at #440.

I have made an icon set for my own personal usage that suits my preferences and system theme, and which could be used as a starting point for the dictionary and tool icons. The icons under /src/data/images/mac/ on this repo are also of better quality and could be used as a starting point for a new icon set.

[hiroyuki-komatsu]

185491d added mode icons (e.g. Hiragana, Fullwidth Katakana, etc) in 48x48 PNG format and SVG format.

Note, the new design is not exactly same with the previous design under the unix/ directory, but same with the mac/ directory.

[hiroyuki-komatsu]

f4c82a5 added Bazel rules to combine Material Icons for tool icons.

% bazel build unix:icons