Setup basic prom metrics endpoint (#624)

* Setup basic prom metrics endpoint
* Use default prom handler to expose go runtime metrics

go.mod

@@ -14,13 +14,16 @@ require (
 	github.com/lib/pq v1.10.5
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/mr-tron/base58 v1.2.0
+	github.com/prometheus/client_golang v1.14.0
 	github.com/sirupsen/logrus v1.9.0
-	github.com/stretchr/testify v1.7.1
+	github.com/stretchr/testify v1.8.0
 	github.com/tuvistavie/securerandom v0.0.0-20140719024926-15512123a948
 	golang.org/x/crypto v0.0.0-20220511200225-c6db032c6c88
 )
 
 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/dchest/bcrypt_pbkdf v0.0.0-20150205184540-83f37f9c154a // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
@@ -31,13 +34,17 @@ require (
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/leodido/go-urn v1.2.1 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_model v0.3.0 // indirect
+	github.com/prometheus/common v0.39.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
 	github.com/ugorji/go/codec v1.2.6 // indirect
-	golang.org/x/sys v0.2.0 // indirect
-	golang.org/x/text v0.3.7 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
+	golang.org/x/sys v0.3.0 // indirect
+	golang.org/x/text v0.5.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )