feat(api): create api proxy/ratelimiting/metrics

services/web-proxy/fly.toml

@@ -0,0 +1,28 @@
+app = "pluralkit"
+kill_signal = "SIGTERM"
+kill_timeout = 5
+
+[metrics]
+  port = 9091
+  path = "/metrics"
+
+[deploy]
+  strategy = "bluegreen"
+
+[[services]]
+  internal_port = 8080
+  protocol = "tcp"
+
+  [services.concurrency]
+    hard_limit = 500
+    soft_limit = 400
+    type = "connections"
+
+  [[services.ports]]
+    force_https = true
+    handlers = ["http"]
+    port = 80
+
+  [[services.ports]]
+    handlers = ["tls", "http"]
+    port = 443