Adds 5 test methods (7 test cases) for the file handler:
GET existing file, GET nonexistent file, GET index.html, PUT upload,
PUT without permission, and auth (no-auth-401, with-auth-success).
Includes test data files and server YAML configs under
tests/e2e/testdata/file/.
Adds 12 new HTTP handler test scenarios: HTTP connector (no-auth, auth, TLS
upstream), CONNECT tunnel (no-sniffing, bypass-403), probeResist (host, web,
file, knock), idleTimeout, and UDP relay over HTTP. Introduces
RunGostContainerWithFiles helper for mounting extra files into test containers.
ginuerzh
RMT