Modernize tests, remove Tester project, and automate amalgamation pipeline

scripts/docker/mono-net40-smoke.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+IMAGE="${MONO_IMAGE:-mono:6.12}"
+
+docker run --rm \
+  -v "${ROOT_DIR}:/workspace" \
+  -w /workspace \
+  "${IMAGE}" \
+  bash -lc "
+    set -euo pipefail
+    mono --version
+    mcs -langversion:latest -target:library -sdk:4 \
+      -r:System \
+      -r:System.Core \
+      -r:System.Data \
+      -r:Microsoft.CSharp \
+      -out:/tmp/DynamORM.Net40.Smoke.dll \
+      AmalgamationTool/DynamORM.Amalgamation.cs
+    ls -lh /tmp/DynamORM.Net40.Smoke.dll
+  "
+