Add gfx103x support

[djismgaming]

Added gfx103X support for the windows build. Fixed the ubuntu build so it would not fail but have yet to test it as I don't have availability of testing that build on my hardware currently.

Would fix the original issue on #58

[slojosic-amd]

@djismgaming please check my PR for adding gfx1150 support: #33 and add similar changes to README.md and manual_instructions.md about adding new RDNA2 targets (gfx103X targets: gfx1030, gfx1031, gfx1032, gfx1034) including their marketing names: RX 6800 XT, RX 6700 XT, RX 6600 XT, RX 6500 XT

[djismgaming]

OK, I think we're set now. Thanks for all the guidance on making this a reality.

[danielholanda]

Thanks for the PR!

[danielholanda]

Thanks for the great PR! Happy to see all workflows passing!
@slojosic-amd please take a look and let me know if you need anything else here before merging

[djismgaming]

A great learning experience. Thanks for the opportunity :D

[slojosic-amd]

LGTM

[slojosic-amd]

I just want to highlight that this PR is adding support only for RDNA2 discrete GPUs (gfx1030, gf1031, gfx1032, gfx1034) and there is no support for RDNA2 integrated GPUs (gfx1033, gfx1035, gfx1036) because TheRock is not providing gfx103X-igpu tarballs here: https://rocm.nightlies.amd.com/tarball/
We will add support for RDNA2 iGPUs once TheRock started releasing gfx103X-all tarball with all RDNA2 targets