ascending order for invoice items in command

[kevinpapst]

Description

Fixes #1972

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 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 #1980 into master will increase coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1980   +/-   ##
=========================================
  Coverage     93.37%   93.37%           
  Complexity     5455     5455           
=========================================
  Files           516      516           
  Lines         16744    16745    +1     
=========================================
+ Hits          15634    15635    +1     
  Misses         1110     1110           

Impacted Files	Coverage Δ	Complexity Δ
src/Command/InvoiceCreateCommand.php	88.97% <ø> (+0.04%)	78.00 <0.00> (ø)