GEO-51 Add ability to remove single layer via server mode

[Kcheung42]

---

Purpose

Add ability to remove single layer via server mode

Related Issues

Closes GEO-51

Submission Checklist

• Commits include the JIRA issue and the #review hashtag (e.g. GEO-### #review <comment>)
• Code passes linter rules (clj-kondo --lint src)
• Feature(s) work when compiled (clojure -M:compile-cljs)

Testing

1. Launch geosync-server in your repl. Modify params according do your
   development setup.

(do
  (use '[geosync.cli])
  (start-server! (add-derived-params
                  {:geosync-server-host "localhost"
                   :geosync-server-port 8082
                   :geoserver-username  "admin"
                   :geoserver-password  "geoserver"
                   :geoserver-rest-uri  "http://localhost:8080/geoserver/rest"
                   :file-watcher        {:dir             "/srv/data"
                                         :workspace-regex {"fire_detections" #"(?<=/)fire_detections/[\w]+"}
                                         :dev             false}})))

2. Register fire detection layers from data.pyregence.org by scp-ing
   the folder to the fire_detections directory that is monitored by the
   file-watcher (i.e. /srv/data/fire_detections). Make sure the viirs
   folder does not already exist otherwise layers will not be registered.

cd /srv/data/fire_detections
scp -r geoserver@data:/var/www/html/fire_detections/viirs .

3. Send the request to remove a single layer from the workspace.

(def request {:action              "remove",
              :geoserver-workspace "fire_detections_viirs",
              :geoserver-layer     "viirs-timestamped_20210924_150000"
              :response-host       "my.server.org",
              :response-port       5555})

(sockets/send-to-server! "localhost" 8082 (json/write-str request))

4. Check Geoserver that the layer is removed but the workspace and
   other layers still exist.

[sirmspencer]

README.org
157 1 -> 3

src/geosync/core.clj
490, this check is redundant. You are already checking each response on 496. You can save a api call by removing this check.
491, use [acc cur]. Accumulator and current are pretty standard.

src/geosync/rest_api.clj
164, 224, I think these should just always be set to recurse=true. If you have it false, and forgot to delete the layer, it fails or leaves behind data in the server. If you already deleted the layer separately, it causes no issue to leave it true. Revert the multi arity function and just add recurse=true