civisibility: add civisibility folder and fix a race condition (#3235)

Author: tonyredondo

Diff for: CODEOWNERS

@@ -29,6 +29,7 @@ go.sum
 /internal/datastreams           @Datadog/data-streams-monitoring @DataDog/apm-go
 
 # civisibility
+/civisibility                   @DataDog/ci-app-libraries @DataDog/apm-go
 /internal/civisibility          @DataDog/ci-app-libraries @DataDog/apm-go
 
 # Gitlab configuration

Diff for: civisibility/linker.go

@@ -0,0 +1,18 @@
+// Unless explicitly stated otherwise all files in this repository are licensed
+// under the Apache License Version 2.0.
+// This product includes software developed at Datadog (https://www.datadoghq.com/).
+// Copyright 2025 Datadog, Inc.
+
+package civisibility
+
+// Let's import all the internal package so we can enable the go:linkname directive over the internal packages
+// This will be useful for dogfooding in dd-go by using a shim package that will call the internal package
+import (
+	_ "gopkg.in/DataDog/dd-trace-go.v1/internal/civisibility/constants"
+	_ "gopkg.in/DataDog/dd-trace-go.v1/internal/civisibility/integrations"
+	_ "gopkg.in/DataDog/dd-trace-go.v1/internal/civisibility/integrations/gotesting"
+	_ "gopkg.in/DataDog/dd-trace-go.v1/internal/civisibility/integrations/gotesting/coverage"
+	_ "gopkg.in/DataDog/dd-trace-go.v1/internal/civisibility/utils"
+	_ "gopkg.in/DataDog/dd-trace-go.v1/internal/civisibility/utils/net"
+	_ "gopkg.in/DataDog/dd-trace-go.v1/internal/civisibility/utils/telemetry"
+)

Diff for: internal/civisibility/integrations/gotesting/instrumentation.go

@@ -162,6 +162,9 @@ func applyAdditionalFeaturesToTestFunc(f func(*testing.T), testInfo *commonInfo)
 	// Apply additional features
 	settings := integrations.GetSettings()
 
+	// ensure that the additional features are initialized
+	_ = integrations.GetKnownTests()
+
 	// Check if we have something to do, if not we bail out
 	if !settings.TestManagement.Enabled && !settings.FlakyTestRetriesEnabled && !settings.EarlyFlakeDetection.Enabled {
 		return f