dotnet-coverage merge drops hit counts, sets them all to 1 #16

Description

The merge command produces coverage data with hits="1" hard-coded for all covered lines.

Steps to reproduce

I have multiple cobertura coverage reports that I want to use dotnet-coverage merge to merge into one.

Consider these coverage files:
TestResults.zip

dotnet-coverage merge TestResults\*xml -r -o merged.cobertura.xml -f cobertura

Expected behavior

I expect the merged report to reflect the hit counts for each line.
In particular, the merged product should report that the {reporoot}\test\Library.Tests\Calculator.cs file's line 17 was hit 3 times.

I get the expected result when merging with the dotnet-reportgenerator-globaltool dotnet CLI tool.

Actual behavior

Every line reported in the merged .xml file reports hits="1".

merged outputs.zip contains outputs from both tools so you can compare.