refactor: switch to cloudflare pages

[lidel]

Closes #244

• removes CI orchestration related to dnslink and loading via gateway infra
• removes coupling between deployments and merges to main or tagging a release
  • we now have separate staging (inbrowser.dev) and production (inbrowser.link) branches which are how things are deployed to inbrowser domains via cloudflare pages

[lidel]

I am merging this to switch CI to follow #244, we can refine text later.

cc @SgtPooki @2color for visibility

Once this lands:

• push to staging deploys to inbrowser.dev
• push to production deploys to inbrowser.link
• they no longer depend on dnslink and ipfs resolution
• release-please only makes release, does not do any automated deployment (did more harm than good)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (4304333) to head (fd01da6).
Report is 36 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #247   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines           35        81   +46     
  Branches         5         9    +4     
=========================================
+ Hits            35        81   +46     

Flag	Coverage Δ
node	100.00% <ø> (ø)

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