Add dtype argument when calling media.data

[wonjuleee]

Summary

How to test

Checklist

• I have added unit tests to cover my changes.​
• I have added integration tests to cover my changes.​
• I have added the description of my changes into CHANGELOG.​
• I have updated the documentation accordingly

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) 2024 Intel Corporation
#
# SPDX-License-Identifier: MIT

[codecov]

Codecov Report

Attention: Patch coverage is 78.12500% with 7 lines in your changes missing coverage. Please review.

Project coverage is 81.03%. Comparing base (63da2ff) to head (33915d2).
Report is 12 commits behind head on develop.

Files	Patch %	Lines
src/datumaro/components/media.py	72.22%	4 Missing and 1 partial ⚠️
src/datumaro/util/image.py	85.71%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1546      +/-   ##
===========================================
- Coverage    81.05%   81.03%   -0.03%     
===========================================
  Files          276      276              
  Lines        32359    32417      +58     
  Branches      6575     6591      +16     
===========================================
+ Hits         26230    26270      +40     
- Misses        4684     4693       +9     
- Partials      1445     1454       +9     

Flag	Coverage Δ
ubuntu-20.04_Python-3.10	81.02% <78.12%> (-0.03%)	⬇️
windows-2022_Python-3.10	81.01% <78.12%> (-0.03%)	⬇️

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[sooahleex]

Looks good to me. Just a question, is there any reason to add dtype as argument?