feat(website): alpha-2 testnet docs

[dionysuzx]

please do not click "merge when ready", but take a look at the PR and feel free to approve. thanks

link: https://website-git-askja-release-taikoxyz.vercel.app/

[codecov]

Codecov Report

Merging #13372 (67ae97f) into main (a046fa3) will not change coverage.
The diff coverage is 55.55%.

❗ Current head 67ae97f differs from pull request most recent head 77887de. Consider uploading reports for the commit 77887de to get more accurate results

@@           Coverage Diff           @@
##             main   #13372   +/-   ##
=======================================
  Coverage   36.21%   36.21%           
=======================================
  Files         123      123           
  Lines        3780     3780           
  Branches      520      520           
=======================================
  Hits         1369     1369           
  Misses       2320     2320           
  Partials       91       91           

Flag	Coverage Δ		*Carryforward flag
bridge-ui	94.22% <ø> (ø)		Carriedforward from fcec8e8
protocol	0.00% <ø> (ø)		Carriedforward from fcec8e8
relayer	62.28% <55.55%> (ø)
ui	100.00% <ø> (ø)		Carriedforward from fcec8e8

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
packages/relayer/indexer/service.go	75.78% <ø> (ø)
packages/relayer/indexer/scan_blocks.go	50.00% <50.00%> (ø)
packages/relayer/indexer/filter_then_subscribe.go	23.23% <100.00%> (ø)

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