Shader hot-reloading in WGPU example #231
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This is the the test a did 1-2 weeks ago on hot-reloading of shaders, haven't had time to continue on it but do think we should clean it up and get it in to the all the example runners
It does have a problem with spirv-builder where that somehow causes every iteration in cargo-watch to rebuild
core
and everything, it seems like. I did test before to not have the spriv-builder build path at all and just load .spv directly from the target folder and that worked flawlessly when iterating, could potentially disable the spriv-builder path when one has thehot-reload
feature enabled as it is not needed then