ci: move GitLab CI to internal repo (#1045)

This PR moves our GitLab CI pipeline to an internal repository

Author: phm07

.gitlab-ci.yml

@@ -1,59 +1,4 @@
 include:
   - project: cloud/integrations/ci
     file:
-      - default.yml
-      - workflows/feature-branches.yml
-
-variables:
-  GOMODCACHE: $CI_PROJECT_DIR/.cache/go-mod
-  GOCACHE: $CI_PROJECT_DIR/.cache/go-build
-
-cache:
-  key:
-    files:
-      - go.mod
-      - go.sum
-  paths:
-    - $GOMODCACHE
-
-build:
-  stage: build
-  image: golang:1.24
-  script:
-    - go env
-    - go mod download
-    - go -C ./tools mod download
-
-test:lint:
-  stage: test
-  image: golangci/golangci-lint:v1.64.8
-  script:
-    - golangci-lint run -v
-
-test:tidy:
-  stage: test
-  image: golang:1.24
-  script:
-    - go mod tidy -v
-    - git diff --exit-code
-
-test:generate:
-  stage: test
-  image: golang:1.24
-  script:
-    - go generate ./...
-    - git diff --exit-code
-
-test:unit:
-  stage: test
-  image: golang:1.24
-  script:
-    - go test -v -coverpkg=./... -coverprofile=coverage.txt ./... 2>&1 | tee test.out
-    - go -C ./tools run github.com/jstemmer/go-junit-report/v2@latest < test.out > report.xml
-  artifacts:
-    when: always
-    reports:
-      junit: report.xml
-    paths:
-      - report.xml
-  coverage: "/coverage: \\d+.\\d+% of statements/"
+      - cli/.gitlab-ci.yml