fix: Respect ACLs while moving files and folders

[Xarthisius]

it would be nice if ACLs on target were respected while moving objects, wouldn't it?

[codecov]

Codecov Report

Merging #9 into master will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master       #9      +/-   ##
==========================================
- Coverage   99.44%   99.44%   -0.01%     
==========================================
  Files           6        6              
  Lines         721      718       -3     
==========================================
- Hits          717      714       -3     
  Misses          4        4              

Impacted Files	Coverage Δ
server/rest/virtual_folder.py	100.00% <100.00%> (ø)
server/rest/virtual_item.py	100.00% <100.00%> (ø)

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