Build using traversal project

Update testing versions

Author: lukebakken

.ci/versions.json

@@ -1,4 +1,4 @@
 {
-  "erlang": "25.3",
-  "rabbitmq": "3.11.11"
+  "erlang": "25.3.1",
+  "rabbitmq": "3.11.15"
 }

Build.csproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.Build.Traversal/3.2.0">
+
+  <PropertyGroup>
+    <IsPackable>false</IsPackable>
+    <MinVerSkip>true</MinVerSkip>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="projects/Benchmarks/Benchmarks.csproj" />
+    <ProjectReference Include="projects/RabbitMQ.Client/RabbitMQ.Client.csproj" />
+    <ProjectReference Include="projects/TestApplications/CreateChannel/CreateChannel.csproj" />
+    <ProjectReference Include="projects/TestApplications/MassPublish/MassPublish.csproj" />
+    <ProjectReference Include="projects/Unit/Unit.csproj" />
+  </ItemGroup>
+
+</Project>

build.ps1

@@ -0,0 +1,25 @@
+[CmdletBinding(PositionalBinding=$false)]
+param(
+    [switch]$RunTests
+)
+
+Write-Host "Run Parameters:" -ForegroundColor Cyan
+Write-Host "`tPSScriptRoot: $PSScriptRoot"
+Write-Host "`tRunTests: $RunTests"
+Write-Host "`tdotnet --version: $(dotnet --version)"
+
+Write-Host "Building all projects (Build.csproj traversal)..." -ForegroundColor "Magenta"
+dotnet build "$PSScriptRoot\Build.csproj"
+Write-Host "Done building." -ForegroundColor "Green"
+
+if ($RunTests) {
+    Write-Host "Running tests: Build.csproj traversal (all frameworks)" -ForegroundColor "Magenta"
+    dotnet test "$PSScriptRoot\Build.csproj" --no-build --logger "console;verbosity=detailed"
+    if ($LastExitCode -ne 0) {
+        Write-Host "Error with tests, aborting build." -Foreground "Red"
+        Exit 1
+    }
+    Write-Host "Tests passed!" -ForegroundColor "Green"
+}
+
+Write-Host "Done."