feat: scaffold independent workbench service

Dockerfile

@@ -0,0 +1,15 @@
+FROM golang:1.26 AS builder
+
+WORKDIR /src
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -o /out/im_workbench ./cmd/workbench
+
+FROM alpine:3.22
+
+WORKDIR /app
+COPY --from=builder /out/im_workbench /app/im_workbench
+COPY configs /app/configs
+EXPOSE 6061
+ENTRYPOINT ["/app/im_workbench"]