feat: update test-visibility -> test-optimization

Author: peoplenarthax

NOTICE

@@ -1,4 +1,4 @@
-Datadog Test Visibility GitLab Script
+Datadog Test Optimization GitLab Script
 Copyright 2024 Datadog, Inc.
 
 This product includes software developed at Datadog (https://www.datadoghq.com/).

README.md

@@ -16,7 +16,7 @@ Execute this script in your GitLab CI's job YAML before running the tests. Pass
 test_node:
   image: node:latest
   script:
-    - LANGUAGES="js" SITE="datadoghq.com" API_KEY="YOUR_API_KEY_SECRET" source <(curl -Ls https://github.com/DataDog/test-visibility-gitlab-script/releases/download/v1.0.1/script.sh)
+    - LANGUAGES="js" SITE="datadoghq.com" API_KEY="YOUR_API_KEY_SECRET" source <(curl -Ls https://github.com/DataDog/test-optimization-gitlab-script/releases/download/v1.0.1/script.sh)
     - npm run test
 ```
 
@@ -48,7 +48,7 @@ test_node:
     - export DD_API_KEY="YOUR_API_KEY_SECRET"
     - export DD_ENV="staging-tests"
     - export DD_TAGS="layer:api,team:intake,key:value"
-    - LANGUAGES="js" SITE="datad0g.com" source <(curl -Ls https://github.com/DataDog/test-visibility-gitlab-script/releases/download/v1.0.1/script.sh)
+    - LANGUAGES="js" SITE="datad0g.com" source <(curl -Ls https://github.com/DataDog/test-optimization-gitlab-script/releases/download/v1.0.1/script.sh)
     - npm run test
 ```
 
@@ -64,7 +64,7 @@ To use this script with vitest you need to modify the NODE_OPTIONS environment v
 test_node_vitest:
   image: node:latest
   script:
-    - LANGUAGES="js" SITE="datadoghq.com" API_KEY="YOUR_API_KEY_SECRET" source <(curl -Ls https://github.com/DataDog/test-visibility-gitlab-script/releases/download/v1.0.1/script.sh)
+    - LANGUAGES="js" SITE="datadoghq.com" API_KEY="YOUR_API_KEY_SECRET" source <(curl -Ls https://github.com/DataDog/test-optimization-gitlab-script/releases/download/v1.0.1/script.sh)
     - export NODE_OPTIONS="$NODE_OPTIONS --import $DD_TRACE_ESM_IMPORT"
     - npm run test
 ```

script.sh

@@ -92,7 +92,7 @@ while IFS='=' read -r name value; do
 done < <(DD_CIVISIBILITY_INSTRUMENTATION_LANGUAGES="${LANGUAGES}" ./install_test_visibility.sh)
 
 echo "---"
-echo "Installed Test Visibility libraries:"
+echo "Installed Test Optimization libraries:"
 
 if [ ! -z "$DD_TRACER_VERSION_DOTNET" ]; then
   echo "- __.NET:__ $DD_TRACER_VERSION_DOTNET"