feat: add SubscriptionOnStartHandler

demo/go.mod

@@ -11,8 +11,8 @@ require (
 	github.com/rs/cors v1.11.0
 	github.com/vektah/gqlparser/v2 v2.5.30
 	github.com/wundergraph/cosmo/composition-go v0.0.0-20240124120900-5effe48a4a1d
-	github.com/wundergraph/cosmo/router v0.0.0-20250715110703-10f2e5f9c79e
-	github.com/wundergraph/cosmo/router-tests v0.0.0-20250603094938-922424d50778
+	github.com/wundergraph/cosmo/router v0.0.0-20250806075617-cd9e4e4994fd
+	github.com/wundergraph/cosmo/router-tests v0.0.0-20250718080012-21acbd83c77f
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.46.1
 	go.opentelemetry.io/otel v1.28.0
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.23.1
@@ -24,13 +24,9 @@ require (
 
 require (
 	connectrpc.com/connect v1.16.2 // indirect
-	dario.cat/mergo v1.0.0 // indirect
-	github.com/Azure/go-ansiterm v0.0.0-20230124172434-306776ec8161 // indirect
 	github.com/KimMachineGun/automemlimit v0.6.1 // indirect
 	github.com/MicahParks/jwkset v0.9.0 // indirect
 	github.com/MicahParks/keyfunc/v3 v3.3.5 // indirect
-	github.com/Microsoft/go-winio v0.6.2 // indirect
-	github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 // indirect
 	github.com/agnivade/levenshtein v1.2.1 // indirect
 	github.com/andybalholm/brotli v1.1.0 // indirect
 	github.com/benbjohnson/clock v1.3.0 // indirect
@@ -44,16 +40,12 @@ require (
 	github.com/cilium/ebpf v0.16.0 // indirect
 	github.com/cloudflare/backoff v0.0.0-20240920015135-e46b80a3a7d0 // indirect
 	github.com/containerd/cgroups/v3 v3.0.2 // indirect
-	github.com/containerd/continuity v0.4.5 // indirect
 	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.7 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/dgraph-io/ristretto/v2 v2.1.0 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dlclark/regexp2 v1.11.0 // indirect
-	github.com/docker/cli v27.4.1+incompatible // indirect
-	github.com/docker/docker v27.1.1+incompatible // indirect
-	github.com/docker/go-connections v0.5.0 // indirect
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/dop251/goja v0.0.0-20230906160731-9410bcaa81d2 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
@@ -74,11 +66,9 @@ require (
 	github.com/goccy/go-json v0.10.3 // indirect
 	github.com/goccy/go-yaml v1.17.1 // indirect
 	github.com/godbus/dbus/v5 v5.1.0 // indirect
-	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang-jwt/jwt/v5 v5.2.2 // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/google/pprof v0.0.0-20230207041349-798e818bf904 // indirect
-	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.19.0 // indirect
 	github.com/hashicorp/consul/sdk v0.16.1 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
@@ -103,18 +93,11 @@ require (
 	github.com/minio/md5-simd v1.1.2 // indirect
 	github.com/minio/minio-go/v7 v7.0.74 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
-	github.com/moby/docker-image-spec v1.3.1 // indirect
-	github.com/moby/sys/user v0.3.0 // indirect
-	github.com/moby/term v0.5.0 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/nats-io/nkeys v0.4.7 // indirect
 	github.com/nats-io/nuid v1.0.1 // indirect
 	github.com/oklog/run v1.0.0 // indirect
-	github.com/opencontainers/go-digest v1.0.0 // indirect
-	github.com/opencontainers/image-spec v1.1.0 // indirect
-	github.com/opencontainers/runc v1.2.3 // indirect
 	github.com/opencontainers/runtime-spec v1.2.0 // indirect
-	github.com/ory/dockertest/v3 v3.12.0 // indirect
 	github.com/pbnjay/memory v0.0.0-20210728143218-7b4eea64cf58 // indirect
 	github.com/phf/go-queue v0.0.0-20170504031614-9abe38d0371d // indirect
 	github.com/pierrec/lz4/v4 v4.1.21 // indirect
@@ -151,10 +134,8 @@ require (
 	github.com/twmb/franz-go/pkg/kmsg v1.7.0 // indirect
 	github.com/urfave/cli/v2 v2.27.7 // indirect
 	github.com/wundergraph/astjson v0.0.0-20250106123708-be463c97e083 // indirect
-	github.com/wundergraph/graphql-go-tools/v2 v2.0.0-rc.203 // indirect
-	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
-	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
-	github.com/xeipuuv/gojsonschema v1.2.0 // indirect
+	github.com/wundergraph/cosmo/demo/pkg/subgraphs/projects v0.0.0-20250715110703-10f2e5f9c79e // indirect
+	github.com/wundergraph/graphql-go-tools/v2 v2.0.0-rc.213.0.20250806074950-2ed6134af313 // indirect
 	github.com/xrash/smetrics v0.0.0-20240521201337-686a1a2994c1 // indirect
 	github.com/yosida95/uritemplate/v3 v3.0.2 // indirect
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
@@ -183,11 +164,10 @@ require (
 	golang.org/x/time v0.9.0 // indirect
 	golang.org/x/tools v0.34.0 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20250106144421-5f5ef82da422 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20250115164207-1a7da9e5054f // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250218202821-56aae31c358a // indirect
 	google.golang.org/grpc v1.68.1 // indirect
 	google.golang.org/protobuf v1.36.6 // indirect
 	gopkg.in/cenkalti/backoff.v1 v1.1.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	rogchap.com/v8go v0.9.0 // indirect
 )