Add selection of current period

[VMelnalksnis]

Changes proposed in this pull request:

• Add buttons for selecting current month/year (Add paging per month to transaction overview #367)

[codecov]

Codecov Report

Merging #419 (3ebe8f7) into master (b5a667d) will decrease coverage by 0.13%.
The diff coverage is 68.96%.

@@            Coverage Diff             @@
##           master     #419      +/-   ##
==========================================
- Coverage   64.87%   64.74%   -0.14%     
==========================================
  Files         249      250       +1     
  Lines        6845     6859      +14     
  Branches      526      535       +9     
==========================================
  Hits         4441     4441              
- Misses       2250     2261      +11     
- Partials      154      157       +3     

Impacted Files	Coverage Δ
...urce/Gnomeshade.Avalonia.Core/DateTimeConverter.cs	0.00% <0.00%> (ø)
...onia.Core/DesignTime/DesignTimeGnomeshadeClient.cs	74.26% <ø> (ø)
...de.Avalonia.Core/Reports/ProductReportViewModel.cs	17.32% <0.00%> (ø)
...ia.Core/Transactions/Controls/TransactionFilter.cs	34.78% <57.89%> (+4.78%)	⬆️
...rce/Gnomeshade.Avalonia.Core/LocalDateConverter.cs	80.00% <80.00%> (ø)
...meshade.Avalonia.Core/DesignTime/DesignTimeData.cs	97.61% <100.00%> (-0.03%)	⬇️
...e.Avalonia.Core/Reports/CategoryReportViewModel.cs	57.69% <100.00%> (ø)
...Avalonia.Core/Transactions/TransactionViewModel.cs	66.66% <100.00%> (-5.40%)	⬇️
...ource/Gnomeshade.WebApi.Client/GnomeshadeClient.cs	79.03% <100.00%> (ø)
source/Gnomeshade.WebApi.Client/Routes.cs	92.30% <100.00%> (ø)
... and 1 more

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