add prometheus instrumentation

go.mod

@@ -8,6 +8,7 @@ require (
 	github.com/jackc/pgx/v5 v5.8.0
 	github.com/jmoiron/sqlx v1.4.0
 	github.com/pressly/goose/v3 v3.26.0
+	github.com/prometheus/client_golang v1.19.0
 	github.com/swaggo/swag v1.16.6
 	github.com/vmware/govmomi v0.52.0
 	github.com/xuri/excelize/v2 v2.10.0
@@ -19,6 +20,8 @@ require (
 	github.com/KyleBanks/depth v1.2.1 // indirect
 	github.com/PuerkitoBio/purell v1.1.1 // indirect
 	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/go-openapi/jsonpointer v0.19.5 // indirect
 	github.com/go-openapi/jsonreference v0.19.6 // indirect
@@ -34,6 +37,9 @@ require (
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mfridman/interpolate v0.0.2 // indirect
 	github.com/ncruces/go-strftime v1.0.0 // indirect
+	github.com/prometheus/client_model v0.5.0 // indirect
+	github.com/prometheus/common v0.48.0 // indirect
+	github.com/prometheus/procfs v0.15.1 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/richardlehane/mscfb v1.0.6 // indirect
 	github.com/richardlehane/msoleps v1.0.6 // indirect
@@ -51,6 +57,7 @@ require (
 	golang.org/x/sys v0.40.0 // indirect
 	golang.org/x/text v0.33.0 // indirect
 	golang.org/x/tools v0.41.0 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
 	modernc.org/libc v1.67.4 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.11.0 // indirect