feat: initialise project structure with core encoding queue, database models, and web management API

Dockerfile

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+# Build stage
+FROM golang:1.26.4-bookworm AS builder
+
+WORKDIR /app
+
+# Copy source code
+COPY . .
+
+# Run go mod tidy to generate go.sum based on source
+RUN go mod tidy
+
+# Build the application
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o /app/bin/goencode ./cmd/goencode
+
+# Final stage
+FROM debian:bookworm-slim
+
+# Install ffmpeg and ca-certificates
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends ffmpeg ca-certificates && \
+    rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# Copy binary from builder
+COPY --from=builder /app/bin/goencode /app/goencode
+
+# Expose port
+EXPOSE 8080
+
+# Run the binary
+ENTRYPOINT ["/app/goencode"]
+CMD ["--config", "/etc/goencode/config.yaml"]