add: record sensors in metrics

go.mod

@@ -9,6 +9,7 @@ require (
 	github.com/google/go-cmp v0.5.9
 	github.com/google/uuid v1.3.1
 	github.com/pion/webrtc/v3 v3.2.20
+	github.com/prometheus/client_golang v1.17.0
 	github.com/rs/cors v1.10.0
 	github.com/rs/zerolog v1.31.0
 	golang.org/x/net v0.14.0
@@ -18,10 +19,13 @@ require (
 )
 
 require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/pion/datachannel v1.5.5 // indirect
 	github.com/pion/dtls/v2 v2.2.7 // indirect
 	github.com/pion/ice/v2 v2.3.11 // indirect
@@ -38,6 +42,9 @@ require (
 	github.com/pion/transport/v2 v2.2.3 // indirect
 	github.com/pion/turn/v2 v2.1.3 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_model v0.4.1-0.20230718164431-9a2bf3000d16 // indirect
+	github.com/prometheus/common v0.44.0 // indirect
+	github.com/prometheus/procfs v0.11.1 // indirect
 	github.com/stretchr/testify v1.8.4 // indirect
 	golang.org/x/crypto v0.12.0 // indirect
 	golang.org/x/sys v0.12.0 // indirect