feat(BRIDGE-122): added observability request and types to GPA

feat(BRIDGE-122): added priority

observability.go

@@ -0,0 +1,13 @@
+package proton
+
+import (
+	"context"
+
+	"github.com/go-resty/resty/v2"
+)
+
+func (c *Client) SendObservabilityBatch(ctx context.Context, req ObservabilityBatch) error {
+	return c.do(ctx, func(r *resty.Request) (*resty.Response, error) {
+		return r.SetHeader("Priority", "u=6").SetBody(req).Post("/data/v1/metrics")
+	})
+}

observability_types.go

@@ -0,0 +1,14 @@
+package proton
+
+import "time"
+
+type ObservabilityBatch struct {
+	Metrics []ObservabilityMetric `json:"Metrics"`
+}
+
+type ObservabilityMetric struct {
+	Name      string      `json:"Name"`
+	Version   int         `json:"Version"`
+	Timestamp time.Time   `json:"Timestamp"`
+	Data      interface{} `json:"Data"`
+}