refactor!: rename the project from Monitor to MoShiro

Namespaces, assemblies, projects and directories, the solution, binaries,
images, systemd units, config paths, environment variables, protocol method
names, the media type and the raw chunk magic all move to MoShiro/moshiro.
Existing data and deployments are not compatible and must be recreated.
Also fix the architecture tests after the solution layout change and make
the update tests independent of their order.

packaging/container/Backend.Containerfile

@@ -1,20 +1,20 @@
 FROM mcr.microsoft.com/dotnet/runtime-deps:10.0-alpine
 
 ARG APP_VERSION=unknown
-LABEL org.opencontainers.image.title="Monitor Backend" \
+LABEL org.opencontainers.image.title="MoShiro Backend" \
       org.opencontainers.image.description="Self-hosted network path quality monitoring backend" \
       org.opencontainers.image.licenses="Apache-2.0" \
       org.opencontainers.image.version="$APP_VERSION"
 
 WORKDIR /app
-COPY --chown=1654:1654 app/monitor-backend /app/monitor-backend
+COPY --chown=1654:1654 app/moshiro-backend /app/moshiro-backend
 COPY --chown=1654:1654 data/.keep /data/.keep
 
 ENV ASPNETCORE_HTTP_PORTS=8080 \
-    Monitor__DataDirectory=/data \
+    MoShiro__DataDirectory=/data \
     DOTNET_EnableDiagnostics=0
 
 USER 1654:1654
 VOLUME ["/data"]
 EXPOSE 8080
-ENTRYPOINT ["/app/monitor-backend"]
+ENTRYPOINT ["/app/moshiro-backend"]