Add detailed benchmark results for multiple relays.

- Included results for `relayer-basic`, `strfry`, and `nostr-rs-relay` relay benchmarks.
- Comprehensive performance metrics added for throughput, latency, query, and concurrent operations.
- Reports saved as plain text and AsciiDoc formats.

cmd/benchmark/Dockerfile.khatru-badger

@@ -6,7 +6,7 @@ WORKDIR /build
 COPY . .
 
 # Build the basic-badger example
-RUN cd examples/basic-badger && \
+RUN echo ${pwd};cd examples/basic-badger && \
     go mod tidy && \
     CGO_ENABLED=0 go build -o khatru-badger .