Feat: multiframe altda channel

[samlaf]

Description

Currently altda forces using "calldata" channels, which restrict their txData output to a single frame at a time. EigenDA (and probably other altdas) support larger blobs than the default 128KB frame size. This PR allows channels to have the altDA da type, which allows them to output a much larger number of frames when queried for txData. These frames are then concatenated and sent as a large blob to the altda source.

Tests

No new tests because there isn't really any change in behaviour here since this is a small repurpose of frame concatenation logic that was already there (curious to see if the ci here will pass). The derivation pipeline also doesn't need any changes because it already can read multiple concatenated frames. Perhaps an e2e test to show that an op-node is able to derive the concatenated frames would be useful though?

Additional context

An alternative here would have been to still read single frame at a time, but increase the MaxL1FrameSize variable. This approach requires more changes, and the derivation pipeline also has hardcoded limits which would have needed to change. Also keeping small frames allows fallbacking to ethDA automatically if ever needed, potentially even inside a single channel.

Metadata

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.14%. Comparing base (fb62380) to head (878a216).
Report is 8 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #12400      +/-   ##
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- Coverage    64.32%   64.14%   -0.19%     
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  Files           52       52              
  Lines         4348     4348              
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- Hits          2797     2789       -8     
- Misses        1376     1385       +9     
+ Partials       175      174       -1     

Flag	Coverage Δ
cannon-go-tests	64.14% <ø> (-0.19%)	⬇️

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see 1 file with indirect coverage changes

[tynes]

This looks like generally a good change to me, we will get around to review more thoroughly after we complete holocene code freeze next week