catchpoint: store certs with blocks during catchpoint restore

[ohill]

Summary

Each block certificate is downloaded but thrown away during catchpoint restore, leading to errors like #5352 when trying to retrieve blocks with their certificates later. Since we always store blocks and certs together this keeps the certificates from being thrown away so certdata ends up in the block db with the blkdata

Closes #5352.

Test Plan

Updated TestBasicCatchpointCatchup to request a msgpack block at the end.

[codecov]

Codecov Report

Merging #5798 (8095d26) into master (40c16e5) will increase coverage by 1.09%.
Report is 2 commits behind head on master.
The diff coverage is 23.07%.

@@            Coverage Diff             @@
##           master    #5798      +/-   ##
==========================================
+ Coverage   54.45%   55.54%   +1.09%     
==========================================
  Files         475      475              
  Lines       66848    66852       +4     
==========================================
+ Hits        36399    37131     +732     
+ Misses      27903    27199     -704     
+ Partials     2546     2522      -24     

Files	Coverage Δ
ledger/catchupaccessor.go	64.80% <100.00%> (+1.05%)	⬆️
ledger/store/blockdb/blockdb.go	30.97% <0.00%> (+0.75%)	⬆️
catchup/catchpointService.go	8.62% <12.50%> (+6.85%)	⬆️

... and 81 files with indirect coverage changes

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[winder]

Works as advertised:

mkdir localtest && cd localtest
cp /path/to/betanet/genesis.json .
algocfg profile set conduit -d .
goal node start -d .
goal node catchup -d .
# catchpoint 30660000 is used
# block in json format
curl -H "Authorization: Bearer <token>" "localhost:8080/v2/blocks/30660000?format=json"
<expected output>
# block in msgpack format
curl -H "Authorization: Bearer <token>" "localhost:8080/v2/blocks/30660000?format=msgpack"
<expected output>
# delta output
curl -H "Authorization: Bearer <token>" "localhost:8080/v2/deltas/30660000"
<expected output>

Please remember to change this from >= to > after the next consensus upgrade:
https://github.com/algorand/conduit/blob/3357b4078db592f3c2d9ddfb341f98d92b5fed40/conduit/plugins/importers/algod/algod_importer.go#L189