Deprecate OwncloudClient - Comments

[ZetaTom]

This is one of a series of pull requests which aim to replace all instances of OwnCloudClient with NextcloudClient. The reason for this change is that the newer NextcloudClient uses OkHttp, replacing the outdated Jackrabbit methods.

Specifically, this pull request implements the following:

• changes related to comments

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 49.27%. Comparing base (cda1b08) to head (3b672c1).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1295      +/-   ##
============================================
- Coverage     49.28%   49.27%   -0.02%     
  Complexity     1002     1002              
============================================
  Files           208      208              
  Lines          7830     7824       -6     
  Branches       1015     1016       +1     
============================================
- Hits           3859     3855       -4     
+ Misses         3417     3416       -1     
+ Partials        554      553       -1     

Files	Coverage Δ
...resources/comments/CommentFileRemoteOperation.java	75.00% <80.00%> (-5.77%)	⬇️

... and 1 file with indirect coverage changes

[github-actions]

Hello there,
Thank you so much for taking the time and effort to create a pull request to our Nextcloud project.

We hope that the review process is going smooth and is helpful for you. We want to ensure your pull request is reviewed to your satisfaction. If you have a moment, our community management team would very much appreciate your feedback on your experience with this PR review process.

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Thank you for contributing to Nextcloud and we hope to hear from you soon!

[github-actions]

SpotBugs

Category	Base	New
Bad practice	35	35
Correctness	34	34
Dodgy code	26	26
Internationalization	6	6
Malicious code vulnerability	49	49
Multithreaded correctness	3	3
Performance	8	8
Total	161	161

[github-actions]

SpotBugs

Category	Base	New
Bad practice	35	35
Correctness	34	34
Dodgy code	26	26
Internationalization	6	6
Malicious code vulnerability	49	49
Multithreaded correctness	3	3
Performance	8	8
Total	161	161

[github-actions]

SpotBugs

Category	Base	New
Bad practice	35	35
Correctness	34	34
Dodgy code	26	26
Internationalization	6	6
Malicious code vulnerability	49	49
Multithreaded correctness	3	3
Performance	8	8
Total	161	161