ls WiP: tried to add filtering and {}formating with alt names

[yarikoptic]

Example is quite neatly working for remote dandiset

(git)lena:~/proj/dandi/dandi-cli-master[master]git
$> dandi --pdb ls -F 'path,size,ID=={metadata[id]}' -f pyout -r --metadata assets dandi://dandi/000029@draft/
PATH                                             SIZE    ID
000029                                           20.7 MB DANDI:000029/draft
sub-anm369964/sub-anm369964_behavior+ecephys.nwb 7.7 MB  dandiasset:689d7c0c-d980-462e-9a56-3df87efc9658
sub-RAT123/sub-RAT123.nwb                        18.8 kB dandiasset:86e09d7e-4355-4887-9c5a-7a137c046953
sub-anm369962/sub-anm369962_behavior+ecephys.nwb 6.6 MB  dandiasset:4f6a8f1d-ca04-491f-a530-9ed00a909c21
sub-anm369963/sub-anm369963_behavior+ecephys.nwb 6.4 MB  dandiasset:38f2024d-62a9-4c79-8a22-7a0ff34b331d
Summary:                                         41.4 MB

but for the local one with all the async fields we do not get it and crashes etc. I guess in the light of not yet addressed #939 this PR should be just considered as a proof of concept instead of anything directly mergeable, and then incorporated into reworking of #939 "specification"

[codecov]

Codecov Report

Base: 88.55% // Head: 66.63% // Decreases project coverage by -21.92% ⚠️

Coverage data is based on head (8bccbf5) compared to base (d5ed594).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1118       +/-   ##
===========================================
- Coverage   88.55%   66.63%   -21.93%     
===========================================
  Files          76       73        -3     
  Lines        9117     8416      -701     
===========================================
- Hits         8074     5608     -2466     
- Misses       1043     2808     +1765     

Flag	Coverage Δ
unittests	66.63% <0.00%> (-21.93%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
dandi/cli/cmd_ls.py	13.02% <0.00%> (-62.55%)	⬇️
dandi/support/tests/test_iterators.py	13.15% <0.00%> (-86.85%)	⬇️
dandi/support/tests/test_digests.py	16.66% <0.00%> (-83.34%)	⬇️
dandi/bids_utils.py	0.00% <0.00%> (-80.77%)	⬇️
dandi/tests/test_pynwb_utils.py	20.00% <0.00%> (-77.78%)	⬇️
dandi/cli/tests/test_formatter.py	22.22% <0.00%> (-77.78%)	⬇️
dandi/cli/tests/test_ls.py	22.38% <0.00%> (-77.62%)	⬇️
dandi/tests/test_organize.py	18.40% <0.00%> (-76.75%)	⬇️
dandi/tests/test_validate.py	26.66% <0.00%> (-73.34%)	⬇️
dandi/cli/tests/test_command.py	31.25% <0.00%> (-68.75%)	⬇️
... and 55 more

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