deployment: add arm and aarch deb generation

[ClementTsang]

Description

A description of the change and what it does. If relevant (such as any change that modifies the UI), please provide screenshots of the change:

Adds arm and aarch64 as targets to build .deb files for in the deployment and nightly workflows.

Issue

If applicable, what issue does this address?

Closes: #736

Testing

Relevant workflows should be run:

Checklist

If relevant, ensure the following have been met:

• Areas your change affects have been linted using rustfmt (cargo fmt)
• The change has been tested and doesn't appear to cause any unintended breakage
• Documentation has been added/updated if needed (README.md, help menu, etc.)
• The pull request passes the provided CI pipeline
• There are no merge conflicts

[codecov-commenter]

Codecov Report

Merging #737 (537ae2d) into master (42909db) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #737   +/-   ##
=======================================
  Coverage   24.20%   24.20%           
=======================================
  Files          56       56           
  Lines       12925    12925           
=======================================
  Hits         3128     3128           
  Misses       9797     9797           

Impacted Files	Coverage Δ
build.rs	24.32% <100.00%> (ø)

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[ClementTsang]

Might want to wait for cross-rs/cross#716 to potentially have some developments so I could potentially easily do this with cross, after some messing around, it seems like running cargo deb on ARM via GHA is kinda messy...

I might still mess around with this in the meantime though.

[ClementTsang]

Gonna close this for now, I'll open a new PR with a slightly less awful solution.