vendor Catch2 and ETL

contrib/fsfw_contrib/Catch2-3.7.1/tools/misc/installOpenCppCoverage.ps1

@@ -0,0 +1,19 @@
+# Downloads are done from the official github release page links
+$downloadUrl = "https://github.com/OpenCppCoverage/OpenCppCoverage/releases/download/release-0.9.9.0/OpenCppCoverageSetup-x64-0.9.9.0.exe"
+$installerPath = [System.IO.Path]::Combine($Env:USERPROFILE, "Downloads", "OpenCppCoverageSetup.exe")
+
+if(-Not (Test-Path $installerPath)) {
+    Write-Host -ForegroundColor White ("Downloading OpenCppCoverage from: " + $downloadUrl)
+    Start-FileDownload $downloadUrl -FileName $installerPath
+}
+
+Write-Host -ForegroundColor White "About to install OpenCppCoverage..."
+
+$installProcess = (Start-Process $installerPath -ArgumentList '/VERYSILENT' -PassThru -Wait)
+if($installProcess.ExitCode -ne 0) {
+    throw [System.String]::Format("Failed to install OpenCppCoverage, ExitCode: {0}.", $installProcess.ExitCode)
+}
+
+# Assume standard, boring, installation path of ".../Program Files/OpenCppCoverage"
+$installPath = [System.IO.Path]::Combine(${Env:ProgramFiles}, "OpenCppCoverage")
+$env:Path="$env:Path;$installPath"