test: add test case based on celestia-node usage

[rootulp]

Closes https://github.com/celestiaorg/rsmt2d/issues/238

cc: @walldiss @Wondertan

[codecov[bot]]

Codecov Report

Merging #239 (604ae0a) into main (658af68) will not change coverage. The diff coverage is n/a.

:exclamation: Current head 604ae0a differs from pull request most recent head 11bb1c0. Consider uploading reports for the commit 11bb1c0 to get more accurate results

@@           Coverage Diff           @@
##             main     #239   +/-   ##
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  Coverage   78.30%   78.30%           
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  Files           7        7           
  Lines         553      553           
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  Hits          433      433           
  Misses         73       73           
  Partials       47       47