chore: install optional dependencies (required for swc)

[jawnsy]

• Use install script in Makefile

Please also review the changes in this commit, which I accidentally pushed to master: 8f843d2

[codecov]

Codecov Report

Merging #335 (9be2ffc) into main (8f843d2) will decrease coverage by 0.18%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #335      +/-   ##
==========================================
- Coverage   67.80%   67.62%   -0.19%     
==========================================
  Files          73      142      +69     
  Lines        6914     7700     +786     
  Branches        0       77      +77     
==========================================
+ Hits         4688     5207     +519     
- Misses       1710     1964     +254     
- Partials      516      529      +13     

Flag	Coverage Δ
unittest-go-macos-latest	66.44% <ø> (+0.28%)	⬆️
unittest-go-ubuntu-latest	67.68% <ø> (+0.26%)	⬆️
unittest-go-windows-2022	65.79% <ø> (+0.01%)	⬆️
unittest-js	63.61% <ø> (?)

Impacted Files	Coverage Δ
provisionerd/provisionerd.go	69.72% <0.00%> (-0.20%)	⬇️
site/components/User/UserAvatar.tsx	87.50% <0.00%> (ø)
site/components/Navbar/UserDropdown.tsx	88.00% <0.00%> (ø)
site/pages/cli-auth.tsx	0.00% <0.00%> (ø)
site/forms/CreateProjectForm.tsx	95.45% <0.00%> (ø)
site/components/ErrorSummary/index.tsx	60.00% <0.00%> (ø)
site/components/Form/PasswordField.tsx	86.66% <0.00%> (ø)
site/components/Table/Table.tsx	100.00% <0.00%> (ø)
site/components/Icons/index.ts	100.00% <0.00%> (ø)
site/pages/workspaces/[user]/[workspace].tsx	0.00% <0.00%> (ø)
... and 63 more

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[kylecarbs]

The test flake seen is being tracked here: #317

We know the root cause, and are fixing it!