Initialize CBDD solution and add a .NET-focused gitignore for generated artifacts.

scripts/coverage-check.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$repo_root"
+
+echo "[coverage] dotnet test with coverage thresholds"
+dotnet test tests/CBDD.Tests/ZB.MOM.WW.CBDD.Tests.csproj \
+  /p:CollectCoverage=true \
+  /p:CoverletOutputFormat=cobertura \
+  /p:Include="[ZB.MOM.WW.CBDD.Core*]*%2c[ZB.MOM.WW.CBDD.Bson*]*" \
+  /p:Exclude="[*.Tests]*" \
+  /p:Threshold=68 \
+  /p:ThresholdType=line%2cbranch \
+  /p:ThresholdStat=total
+
+echo "[coverage] complete"