Implement ingest-service: MQTT -> ClickHouse (batched) + RabbitMQ event

Subscribes to devices/+/telemetry, validates payloads, buffers writes into
ClickHouse (flush on size or interval), and emits a per-reading event on
RabbitMQ for rule-engine-service to consume later. Adds the initial Postgres
and ClickHouse schema migrations, a Dockerfile, and wires the service into
docker-compose. Verified end-to-end via docker compose + mosquitto_pub: row
lands in ClickHouse and the event reaches the telemetry.new_reading queue.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

services/ingest-service/go.mod

@@ -0,0 +1,30 @@
+module git.cactoz.su/cacto/home_automatization/services/ingest-service
+
+go 1.25.0
+
+require (
+	github.com/ClickHouse/clickhouse-go/v2 v2.47.0
+	github.com/eclipse/paho.mqtt.golang v1.5.1
+	github.com/rabbitmq/amqp091-go v1.13.0
+)
+
+require (
+	github.com/ClickHouse/ch-go v0.73.0 // indirect
+	github.com/andybalholm/brotli v1.2.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/go-faster/city v1.0.1 // indirect
+	github.com/go-faster/errors v0.7.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/gorilla/websocket v1.5.3 // indirect
+	github.com/klauspost/compress v1.18.6 // indirect
+	github.com/paulmach/orb v0.13.0 // indirect
+	github.com/pierrec/lz4/v4 v4.1.27 // indirect
+	github.com/segmentio/asm v1.2.1 // indirect
+	github.com/shopspring/decimal v1.4.0 // indirect
+	go.opentelemetry.io/otel v1.44.0 // indirect
+	go.opentelemetry.io/otel/trace v1.44.0 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/net v0.56.0 // indirect
+	golang.org/x/sync v0.20.0 // indirect
+	golang.org/x/sys v0.46.0 // indirect
+)