Deprecate OwncloudClient - Notifications

[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 The reason for this change is that the newer NextcloudClient uses OkHttp, replacing the outdated Jackrabbit methods.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 notifications
• see Deprecate OwncloudClient - Helpers #1271

[github-actions]

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[codecov]

Codecov Report

Attention: Patch coverage is 44.26230% with 34 lines in your changes missing coverage. Please review.

Project coverage is 49.28%. Comparing base (a5b967b) to head (f93e00f).
Report is 4 commits behind head on master.

❗ Current head f93e00f differs from pull request most recent head d93c23e

Please upload reports for the commit d93c23e to get more accurate results.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1272      +/-   ##
============================================
+ Coverage     47.56%   49.28%   +1.71%     
- Complexity      977     1002      +25     
============================================
  Files           208      208              
  Lines          7850     7830      -20     
  Branches       1019     1015       -4     
============================================
+ Hits           3734     3859     +125     
+ Misses         3580     3417     -163     
- Partials        536      554      +18     

Files	Coverage Δ
...tPredefinedCustomStatusMessageRemoteOperation.java	61.90% <100.00%> (ø)
.../lib/resources/users/SetStatusRemoteOperation.java	61.11% <100.00%> (-2.05%)	⬇️
...ib/resources/users/SetUserInfoRemoteOperation.java	85.29% <100.00%> (-2.59%)	⬇️
...ations/RegisterAccountDeviceForProxyOperation.java	0.00% <0.00%> (ø)
...ions/UnregisterAccountDeviceForProxyOperation.java	0.00% <0.00%> (ø)
...UserDefinedCustomStatusMessageRemoteOperation.java	65.21% <71.42%> (+1.58%)	⬆️
.../notifications/GetNotificationRemoteOperation.java	72.41% <50.00%> (+5.74%)	⬆️
...notifications/GetNotificationsRemoteOperation.java	70.37% <50.00%> (+5.85%)	⬆️
...cations/DeleteAllNotificationsRemoteOperation.java	55.55% <50.00%> (+55.55%)	⬆️
...tifications/DeleteNotificationRemoteOperation.java	60.00% <42.85%> (+60.00%)	⬆️
... and 2 more

... and 16 files with indirect coverage changes

[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

[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