imp: adding M1 chip macOS install instructions

[lizgehret]

This PR adds an install tab with instructions for macOS users with an M1 chip.

[lizgehret]

Preview of local docs build:

Note that the conda activate qiime2-2022.8 line has been updated to include the dev cycle epoch (2022.11). This screenshot was taken before that commit was pushed up (commit SHA f30dab0).

[ebolyen]

Any chance we can limit our tab length at this point so we can fit more in one line?

• OS X (64-bit)
• OS X (M1)
• Linux (64-bit)
• Windows Subsystem for Linux (64-bit)

[lizgehret]

Any chance we can limit our tab length at this point so we can fit more in one line?

* OS X (64-bit)

* OS X (M1)

* Linux (64-bit)

* Windows Subsystem for Linux (64-bit)

Good idea @ebolyen, this looks much better:

[lizgehret]

Update with clean-up block:

[thermokarst]

Food for thought - the "M1" instructions should just be the OS X instructions, period. Maybe people don't need to know which processor type they have (edit: I mean "right now" - since arm builds don't exist, the distinction between the two macos build types isn't particularly interesting or informative), and the two commands are functionally identical. Also, there are other apple silicon processors besides "M1" - making this a bit more confusing for those folks.

https://en.wikipedia.org/wiki/Apple_silicon#M_series

[ebolyen]

I suppose that's true, although maybe someday we might have osx-arm64 and osx-64 builds as independent things. So I don't know if the separate tab is harmful (it seems like it could clarify things in a similar way as the WSL tab).

[thermokarst]

This feels like a premature optimization to me, but either way, M2 apple silicon is out now, so calling these the "M1" instructions might not be particularly clarifying either, FWIW.

[thermokarst]

Relevant PR for the M2 discussion here: https://github.com/qiime2/docs/pull/545