Fix model remove CLI command

[vinnamkim]

This should be merged after #804.

Summary

• Related ticket no.: https://jira.devtools.intel.com/browse/CVS-103074
• I found this bug while fixing explain command cannot find the model  #721. Please see the following shell log. datum model remove model-0 CLI command cannot remove "model-0" although it was enrolled in the project already.
• datum model info description is also added.

(datumaro) vinnamki@jisunkwo-desktop:~/datumaro/ws_test/logging$ datum model info
model-0
model-1
my-model
(datumaro) vinnamki@jisunkwo-desktop:~/datumaro/ws_test/logging$ datum model remove model-0
2023-02-06 10:33:01,318 ERROR: "Unknown model 'model-0'"
Traceback (most recent call last):
 File "/home/vinnamki/miniconda3/envs/datumaro/bin/datum", line 8, in <module>
   sys.exit(main())
 File "/home/vinnamki/datumaro/datumaro/cli/__main__.py", line 193, in main
   retcode = args.command(args)
 File "/home/vinnamki/datumaro/datumaro/util/scope.py", line 158, in wrapped_func
   ret_val = func(*args, **kwargs)
 File "/home/vinnamki/datumaro/datumaro/cli/contexts/model.py", line 171, in remove_command
   project.remove_model(args.name)
 File "/home/vinnamki/datumaro/datumaro/components/project.py", line 2689, in remove_model
   raise KeyError("Unknown model '%s'" % name)
KeyError: "Unknown model 'model-0'"

How to test

I added a test to cover this bug.

Checklist

• I submit my changes into the develop branch
• I have added description of my changes into CHANGELOG
• I have updated the documentation accordingly
• I have added tests to cover my changes
• I have linked related issues

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below)

# Copyright (C) 2021 Intel Corporation
#
# SPDX-License-Identifier: MIT

[codecov-commenter]

Codecov Report

Base: 77.67% // Head: 77.67% // Decreases project coverage by -0.01% ⚠️

Coverage data is based on head (fccaed5) compared to base (b10ee42).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #805      +/-   ##
===========================================
- Coverage    77.67%   77.67%   -0.01%     
===========================================
  Files          179      179              
  Lines        23335    23337       +2     
  Branches      5032     5032              
===========================================
  Hits         18126    18126              
- Misses        4146     4148       +2     
  Partials      1063     1063              

Flag	Coverage Δ
macos-11_Python-3.10	77.59% <0.00%> (-0.01%)	⬇️
macos-11_Python-3.7	77.16% <0.00%> (-0.01%)	⬇️
macos-11_Python-3.8	77.53% <0.00%> (?)
macos-11_Python-3.9	77.55% <0.00%> (?)
ubuntu-20.04_Python-3.10	77.59% <0.00%> (-0.01%)	⬇️
ubuntu-20.04_Python-3.7	77.16% <0.00%> (-0.01%)	⬇️
ubuntu-20.04_Python-3.8	77.54% <0.00%> (-0.01%)	⬇️
ubuntu-20.04_Python-3.9	77.55% <0.00%> (-0.01%)	⬇️
windows-2019_Python-3.10	77.53% <0.00%> (?)
windows-2019_Python-3.7	77.10% <0.00%> (-0.01%)	⬇️
windows-2019_Python-3.8	77.47% <0.00%> (?)
windows-2019_Python-3.9	77.48% <0.00%> (-0.01%)	⬇️

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

Impacted Files	Coverage Δ
datumaro/cli/contexts/model.py	21.64% <0.00%> (-0.17%)	⬇️
datumaro/components/project.py	79.18% <0.00%> (-0.06%)	⬇️

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[wonjuleee]

Looks good to me! Thank you for your contribution.