feat(portal): Add styled errors pages (404, 422, 500)

[bmanifold]

Closes #2136

Screenshots for 404 and 500

[vercel]

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1 Ignored Deployment

Name	Status	Preview	Comments	Updated (UTC)
firezone	⬜️ Ignored (Inspect)	Visit Preview		Mar 21, 2024 2:51pm

[github-actions]

Terraform Cloud Plan Output

Plan: 9 to add, 8 to change, 8 to destroy.

Terraform Cloud Plan

[bmanifold]

As a quick note, I pretty much just followed this doc page: https://hexdocs.pm/phoenix/custom_error_pages.html

@AndrewDryga If there is a better way of doing this just let me know and I'll update the PR.

[AndrewDryga]

LGTM. I always dreamed about nice funny error pages like those https://codepen.io/affectionatelettuce/pen/BarrJKJ but we need a designer for that :).

[jamilbk]

but we need a designer for that :).

I'm sure there's an AI tool that can make us one!

[bmanifold]

Yeah, I'm down to make something funnier, I just did these because it was easy. I'm no animator though, I'd definitely need to find a pre-made animation if we wanted to do something like you linked.

[jamilbk]

Cool it! You're making too many requests

[AndrewDryga]

ChatGPT did an image for us:

[github-actions]

Performance Test Results

TCP

Test Name	Received/s	Sent/s	Retransmits
direct-tcp-client2server	228.2 MiB (+2%)	229.9 MiB (+2%)	241 (-46%)
direct-tcp-server2client	230.2 MiB (-0%)	231.7 MiB (-0%)	65 (-89%)
relayed-tcp-client2server	151.4 MiB (+5%)	152.1 MiB (+4%)	139 (-10%)
relayed-tcp-server2client	147.6 MiB (-5%)	148.1 MiB (-5%)	182 (-21%)

UDP

Test Name	Total/s	Jitter	Lost
direct-udp-client2server	50.0 MiB (-0%)	0.30ms (+687%)	0.00% (NaN%)
direct-udp-server2client	50.0 MiB (+0%)	0.01ms (-6%)	0.00% (NaN%)
relayed-udp-client2server	50.0 MiB (+0%)	0.09ms (+3%)	0.00% (NaN%)
relayed-udp-server2client	50.0 MiB (+0%)	0.08ms (+70%)	0.00% (NaN%)