feat(ml): support multiple urls (#14347)

* support multiple url

* update api

* styling

unnecessary `?.`

* update docs, make new url field go first

add load balancing section

* update tests

doc formatting

wording

wording

linting

* small styling

* `url` -> `urls`

* fix tests

* update docs

* make docusaurus happy

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>

docs/docs/install/config-file.md

@@ -83,7 +83,7 @@ The default configuration looks like this:
   },
   "machineLearning": {
     "enabled": true,
-    "url": "http://immich-machine-learning:3003",
+    "url": ["http://immich-machine-learning:3003"],
     "clip": {
       "enabled": true,
       "modelName": "ViT-B-32__openai"