CLI: Dump only `sealed` by default and add `incremental` option

[GeigerJ2]

Previously, no checks were applied on the state of a process. Now, by default, only sealed processes are being dumped to disk. This can be disabled with the new --dump-unsealed flag. In addition, the option of --incremental dumping is added, in which case an incomplete existing dumping output directory can be gradually filled up with data, e.g., while the process is running in conjunction with the --dump-unsealed flag. Before, only the --overwrite flag was available for this purpose, which would, however, clean the entire top-level directory.

Lastly, the validate_make_dump_path method was refactored out of the ProcessDumper and put as a normal function into utils.py under tools/dumping.

[GeigerJ2]

Cheers, thanks for the great review, @agoscinski! I have implemented your proposed changes.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 97.56098% with 1 line in your changes missing coverage. Please review.

Project coverage is 77.87%. Comparing base (ef60b66) to head (a20538a). Report is 185 commits behind head on main.

Files with missing lines	Patch %	Lines
src/aiida/cmdline/commands/cmd_process.py	80.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6591      +/-   ##
==========================================
+ Coverage   77.51%   77.87%   +0.37%     
==========================================
  Files         560      567       +7     
  Lines       41444    42120     +676     
==========================================
+ Hits        32120    32796     +676     
  Misses       9324     9324              

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