refactor(durable-storage): categorise error types into operational and invalid arguments

[vapourismo]

What

Refactor and reduce the number of error types in the Durable Storage crate. All operational errors (not caused directly by the user) will surface as OperationalError. Misuse errors will appear as InvalidArgumentError.

Needed for #770.

Why

Improve the error situation in the Durable Storage crate per this thread.

Manually Testing

make all

Tasks for the Author

• Link all Linear issues related to this MR using magic words (e.g. part of, relates to, closes).
• Eliminate dead code and other spurious artefacts introduced in your changes.
• Document new public functions, methods and types.
• Make sure the documentation for updated functions, methods, and types is correct.
• Add tests for bugs that have been fixed.
• Explain changes to regression test captures when applicable.
• Write commit messages in agreement with our guidelines.
• Self-review your changes to ensure they are high-quality.
• Complete all of the above before assigning this MR to reviewers.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.08%. Comparing base (c98f128) to head (e14864c).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #814      +/-   ##
==========================================
- Coverage   91.10%   91.08%   -0.02%     
==========================================
  Files         110      110              
  Lines       20913    20913              
  Branches    20913    20913              
==========================================
- Hits        19052    19049       -3     
- Misses       1488     1491       +3     
  Partials      373      373              

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[github-actions]

Benchmark results for revision 2dcf27f:

Metric	Duration	TPS
Mean	1.531986762s	26.110
Worst	1.54139479s	25.951
Best	1.522877409s	26.266
Standard Deviation	±5.762039ms	±0.098

Full results

Run	Transfers	Duration	TPS
1	40	1.53797487s	26.008
2	40	1.527123205s	26.193
3	40	1.531752013s	26.114
4	40	1.538498351s	25.999
5	40	1.538603894s	25.998
6	40	1.528344475s	26.172
7	40	1.537658908s	26.014
8	40	1.524533463s	26.238
9	40	1.530596854s	26.134
10	40	1.534065202s	26.075
11	40	1.527912898s	26.180
12	40	1.54139479s	25.951
13	40	1.527839524s	26.181
14	40	1.540419253s	25.967
15	40	1.52709141s	26.194
16	40	1.523726365s	26.251
17	40	1.537996435s	26.008
18	40	1.531848538s	26.112
19	40	1.529477388s	26.153
20	40	1.522877409s	26.266

Compare the results above with those for the default branch.