Update OpenAPI spec to include missing endpoints

The spec is missing the following endpoints:

• /eca/status/{fingerprint}
• /eca/status/{fingerprint}/ui
• /eca/lookup

added Documentation statewip team:webdev labels

assigned to @zacharysabourin

mentioned in commit zacharysabourin/git-eca-rest-api@75d2be9e

mentioned in merge request !100 (merged)

added statereview label and removed statewip label

closed with commit 75d2be9e

mentioned in commit b66deb21