added romanian translations

[kevinpapst]

Description

Translation by @calin-ghiurco

Can be tested at https://demo-branch.kimai.org/ro/login with:

• Username: susan_super
• Password: kitten

TODO

• testing
• complete translations
• missing translation file export.ro.xlf
• AdminLTE Bundle not yet translated

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)

Checklist

• I verified that my code applies to the guidelines (composer kimai:code-check)
• I updated the documentation (see here)
• I agree that this code is used in Kimai and will be published under the MIT license

[codecov]

Codecov Report

Merging #1722 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1722   +/-   ##
=========================================
  Coverage     92.15%   92.15%           
  Complexity     4855     4855           
=========================================
  Files           449      449           
  Lines         15060    15060           
=========================================
  Hits          13878    13878           
  Misses         1182     1182           

[calin-ghiurco]

Everything is good to go.

[kevinpapst]

Thank you so much for your contribution! 🚀