Add GitLab scanning, linting

.ci-scripts/lint.sh

+#!/bin/bash
+
+jq --null-input --arg yaml "$1" '.content=$yaml' \
+  | curl "https://git.ethitter.com/api/v4/ci/lint?include_merged_yaml=true" \
+    --silent \
+    --header 'Content-Type: application/json' \
+    --header "PRIVATE-TOKEN: $GITLAB_API_PAT" \
+    --data @- \
+    -o result.json
+
+echo "**********************************************************"
+echo "MERGED YAML:"
+jq --raw-output '.merged_yaml' < result.json
+
+echo "**********************************************************"
+echo "ERRORS:"
+jq '.errors' < result.json
+
+echo "**********************************************************"
+echo "WARNINGS:"
+jq '.warnings' < result.json
+
+echo "**********************************************************"
+echo "IS VALID:"
+jq '.valid' < result.json
+
+if [ "$(jq '.valid' < result.json)" = "true" ]; then
+  exit 0
+else
+  exit 1
+fi