feat: add support for Go, Ruby, and NuGet modules with integration testing configurations

Signed-off-by: d9pouces <github@19pouces.net>

tests/dockerfiles/repos/build_test_go_module.py

@@ -0,0 +1,47 @@
+"""Build a minimal, offline, hand-rolled Go module proxy tree, for
+integration-testing the `go` module of id-configurator.
+
+No network access and no Go toolchain is used: the module proxy protocol
+(https://go.dev/ref/mod#module-proxy) only requires a handful of static
+files, none of which embed the server's own base URL (unlike Composer/
+npm/cargo), so this can be served directly by nginx with no rewriting.
+"""
+
+from __future__ import annotations
+
+import io
+import json
+import pathlib
+import zipfile
+
+MODULE = "example.invalid/idconfiguratortestpkg"
+VERSION = "v0.0.1"
+OUT_DIR = pathlib.Path("/srv")
+MARKER = "test-only module served by the id-configurator integration tests\n"
+
+GO_MOD = f"module {MODULE}\n\ngo 1.21\n"
+
+
+def build_zip() -> bytes:
+    buffer = io.BytesIO()
+    prefix = f"{MODULE}@{VERSION}"
+    with zipfile.ZipFile(buffer, "w") as archive:
+        archive.writestr(f"{prefix}/go.mod", GO_MOD)
+        archive.writestr(f"{prefix}/marker.txt", MARKER)
+    return buffer.getvalue()
+
+
+def main() -> None:
+    module_dir = OUT_DIR / MODULE / "@v"
+    module_dir.mkdir(parents=True, exist_ok=True)
+    (module_dir / "list").write_text(f"{VERSION}\n", encoding="utf-8")
+    (module_dir / f"{VERSION}.info").write_text(
+        json.dumps({"Version": VERSION, "Time": "2024-01-01T00:00:00Z"}),
+        encoding="utf-8",
+    )
+    (module_dir / f"{VERSION}.mod").write_text(GO_MOD, encoding="utf-8")
+    (module_dir / f"{VERSION}.zip").write_bytes(build_zip())
+
+
+if __name__ == "__main__":
+    main()