Revamp go based integration tests

This uplevels the integration tests to run the server which can allow
testing an existing server, or a remote server.

integration/basic_test.go

@@ -0,0 +1,28 @@
+//go:build integration
+
+package integration
+
+import (
+	"context"
+	"net/http"
+	"testing"
+	"time"
+
+	"github.com/jmorganca/ollama/api"
+)
+
+func TestOrcaMiniBlueSky(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Minute)
+	defer cancel()
+	// Set up the test data
+	req := api.GenerateRequest{
+		Model:  "orca-mini",
+		Prompt: "why is the sky blue?",
+		Stream: &stream,
+		Options: map[string]interface{}{
+			"temperature": 0,
+			"seed":        123,
+		},
+	}
+	GenerateTestHelper(ctx, t, &http.Client{}, req, []string{"rayleigh"})
+}