chore!: upgrade to celestia-app v0.7.0

[rootulp]

Closes #1142
Opens #1231

[codecov-commenter]

Codecov Report

Merging #1147 (44c8d92) into main (793e2b0) will increase coverage by 0.26%.
The diff coverage is 57.14%.

@@            Coverage Diff             @@
##             main    #1147      +/-   ##
==========================================
+ Coverage   55.55%   55.82%   +0.26%     
==========================================
  Files         160      160              
  Lines        9853     9862       +9     
==========================================
+ Hits         5474     5505      +31     
+ Misses       3841     3825      -16     
+ Partials      538      532       -6     

Impacted Files	Coverage Δ
header/header.go	50.00% <0.00%> (ø)
header/pb/extended_header.pb.go	36.50% <ø> (ø)
header/serde.go	27.27% <ø> (ø)
header/testing.go	89.56% <ø> (ø)
service/rpc/share.go	0.00% <0.00%> (ø)
share/add.go	77.35% <ø> (ø)
share/availability/cache/availability.go	87.50% <ø> (ø)
share/availability/test/testing.go	67.39% <ø> (ø)
share/byzantine.go	69.23% <ø> (ø)
share/eds/retriever.go	91.97% <ø> (ø)
... and 14 more

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[rootulp]

Integ test failed CI. Will debug tomorrow

[Wondertan]

@rootulp, is it ready for review?

[rootulp]

@Wondertan nope, sorry I haven't investigated why integ test is failing yet.

[Wondertan]

Note that we have one flakey integration test that may be annoying for you to debug

[rootulp]

Noted. I just started a third retry

[rootulp]

Notes from investigation:

• This log is suspect: starting Bridge Node: square size is not a power of two: 0 (link). The error appears to originate from celestia-app shares.Split even though the block size in this test is 16 per this line.
• It seems plausible that the block data used in this test (link) isn't splittable by celestia-app
• I verified that squareSize is indeed the issue at least for the TestFullReconstructFromBridge integ test. Hacky workaround was to add b.Data.OriginalSquareSize = 16 immediately before this line which makes the test pass.

Synchronous debugging with @evan-forbes

• The current swamp tests use a kvstore application. We want to replace the kvstore application with celestia-app in order for celestia-app to properly set the square size. We're tackling this by exporting a public function from celestia-app: Export a public testutil function for use in celestia-node swamp tests celestia-app#770

[Wondertan]

Thanks, @rootulp. Mockable App is something we have wanted for a while already, and it just has never been a priority. From your message, it seems like it is blocking the update now, right?

[rootulp]

Yep blocking. @evan-forbes is working on a slightly different approach to unblock this PR.

[rootulp]

Blocked on celestiaorg/celestia-app#770

[rootulp]

Update: blocked on #628 and #1160

[Wondertan]

@rootulp, the #1160 is now merged, so you freely continue here.

Ping if anything is needed from our side

[rootulp]

Another instance of #1090 encountered here

[Wondertan]

LGTM. Thank you for the help ❤️

Left two non-blocking optional nits