Split webdav feature

[phil-davis]

Description

1. Split the existing scenarios into smaller feature files, without changing anything.
2. Remove duplicate scenarios (in the big webdav-related.feature there were some duplicated scenarios that nobody noticed)
3. Add a scenario for deleting a file (that feature was empty!)
4. Add a scenarios for deleting a folder (that feature was empty!)
5. Move the common "creating user0" step into the background wherever possible

Related Issue

#32366

Motivation and Context

The apiWebDAV acceptance tests are mostly in one huge feature file.
In order to understand what is tested, it needs to be in smaller feature files for the individual upload, download, move, copy, delete... features that make up "webDAV".

How Has This Been Tested?

CI

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests

Checklist:

• Code changes
• Acceptance tests added

Open tasks:

• Backport (if applicable set "backport-request" label and remove when the backport was done)

[codecov]

Codecov Report

Merging #32365 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master   #32365   +/-   ##
=========================================
  Coverage     64.03%   64.03%           
  Complexity    18579    18579           
=========================================
  Files          1171     1171           
  Lines         69876    69876           
  Branches       1267     1267           
=========================================
  Hits          44747    44747           
  Misses        24759    24759           
  Partials        370      370

Flag	Coverage Δ	Complexity Δ
#javascript	52.84% <ø> (ø)	0 <ø> (ø)	⬇️
#phpunit	65.31% <ø> (ø)	18579 <ø> (ø)	⬇️

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[phil-davis]

Backport stable10 #32367