Jenkinsfile with AI provisions

The Build Agent should provide the following environment (in alphabetical order):
- GITEA_AGENT			in clear text
- GITEA_API_URL			in clear text
- GITEA_API_KEY			in clear text
- GIT_USER				in clear text
- MAX_FILE_BYTES		in clear text
- OLLAMA_API_KEY		through credentials:secret text
- OLLAMA_API_URI		in clear text
- OLLAMA_MODEL			in clear text
- REQUEST_TIMEOUT_SEC	through credentials:secret text
- FILE_EXTS				in clear text (cshtml,cs,js,json)


