feat: write auto-detected port mappings during a deploy

During an app build, we now auto-detect ports based on the source code. This is usually http:80:5000, with Dockerfile-based deploys having their ports extracted from the docker image or Dockerfile. Additionally, we add an https:443 mapping for any detected http:80 mapping when there is an ssl certificate, and all http port mappings are transformed to https mappings for Dockerfile-based deploys.

While the ports aren't currently consumed, a future refactor will provide the ability to fallback to the new detected ports when there is no user-specified port mapping.

plugins/builder-herokuish/builder-build

@@ -91,6 +91,7 @@ trigger-builder-herokuish-builder-build() {
 
   "$DOCKER_BIN" container commit "${DOCKER_COMMIT_LABEL_ARGS[@]}" "$CID" "$IMAGE" >/dev/null
   plugn trigger scheduler-register-retired "$APP" "$CID"
+  plugn trigger ports-set-detected "$APP" "http:80:5000"
   plugn trigger post-build-buildpack "$APP" "$SOURCECODE_WORK_DIR"
 }