Add RabbitMQ agent and containers

cmd/agent/Dockerfile

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+FROM golang:1.22 AS builder
+
+# Copy the entire project
+WORKDIR /app
+COPY . .
+
+# Download dependencies
+RUN go mod download
+
+# Set the working directory to the cmd/agent subproject
+WORKDIR /app/cmd/agent
+
+# Build the agent
+RUN go build -o /bin/mrva_agent ./main.go
+
+FROM ubuntu:24.10 as runner
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Build argument for CodeQL version, defaulting to the latest release
+ARG CODEQL_VERSION=latest
+
+# Install packages
+RUN apt-get update && apt-get install --no-install-recommends --assume-yes \
+    unzip \
+    curl \
+    ca-certificates
+
+# If the version is 'latest', lsget the latest release version from GitHub, unzip the bundle into /opt, and delete the archive
+RUN if [ "$CODEQL_VERSION" = "latest" ]; then \
+    CODEQL_VERSION=$(curl -s https://api.github.com/repos/github/codeql-cli-binaries/releases/latest | grep '"tag_name"' | sed -E 's/.*"([^"]+)".*/\1/'); \
+    fi && \
+    echo "Using CodeQL version $CODEQL_VERSION" && \
+    curl -L "https://github.com/github/codeql-cli-binaries/releases/download/$CODEQL_VERSION/codeql-linux64.zip" -o /tmp/codeql.zip && \
+    unzip /tmp/codeql.zip -d /opt && \
+    rm /tmp/codeql.zip
+
+# Set environment variables for CodeQL
+ENV CODEQL_CLI_PATH=/opt/codeql
+
+# Set environment variable for CodeQL for `codeql database analyze` support on ARM
+# This env var has no functional effect on CodeQL when running on x86_64 linux
+ENV CODEQL_JAVA_HOME=/usr/lib/jvm/
+
+# Copy built agent binary from the builder stage
+WORKDIR /app
+COPY --from=builder /bin/mrva_agent ./mrva_agent
+
+# Run the agent
+ENTRYPOINT ["./mrva_agent"]