Populate memo in bigtable transaction structs (backport #19512)

[mergify]

This is an automatic backport of pull request #19512 done by Mergify.
Cherry-pick of f4ae450 has failed:

On branch mergify/bp/v1.6/pr-19512
Your branch is up to date with 'origin/v1.6'.

You are currently cherry-picking commit f4ae450f3.
  (fix conflicts and run "git cherry-pick --continue")
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Changes to be committed:
	modified:   storage-bigtable/src/lib.rs
	new file:   transaction-status/src/extract_memos.rs
	modified:   transaction-status/src/lib.rs

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   transaction-status/src/parse_instruction.rs

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[mergify]

automerge label removed due to a CI failure

[codecov]

Codecov Report

Merging #19606 (e2179b2) into v1.6 (3606de5) will decrease coverage by 0.0%.
The diff coverage is 67.1%.

@@            Coverage Diff            @@
##             v1.6   #19606     +/-   ##
=========================================
- Coverage    82.3%    82.3%   -0.1%     
=========================================
  Files         423      424      +1     
  Lines      118582   118646     +64     
=========================================
+ Hits        97619    97665     +46     
- Misses      20963    20981     +18