Add suppot for more platforms to installer script

[omninonsense]

This makes the installation script work on M1 macs, as well as inside docker (especially when combined with buildx) for aarch64/arm64 architectures.

Related:

• Publish pre-built binary for linux/arm64 (aarch64) #1064
• Add check for Apple Silicon Macs #952
• cargo wasm-pack install does not work on aarch64 #1125

[gthb]

There's a bunch of open issues about M1 support, should this be marked as closing some of them? https://github.com/rustwasm/wasm-pack/issues?q=is%3Aissue+is%3Aopen+m1

[omninonsense]

Hi! Thanks for taking a look at this. It might help with #1064; I'll update the description

[omninonsense]

Seems to fail for unrelated reasons

[omninonsense]

Hi, @gthb, are you the right person to look into merging this, or do we just wait for it to get picked up by the maintainers?

[gthb]

Hi, @gthb, are you the right person to look into merging this, or do we just wait for it to get picked up by the maintainers?

I think only @drager has the admin bit, or at least is the only one who has been acting on some PRs in recent months.

[drager]

Thank you!