Hard caps on creating projects/orgs/collections (#4430)

* implement backend limits on project creation

* implement collection, org creation hard caps

* Fix limit api

* Fix clippy

* Fix limits

* Update sqlx queries

* Address PR comments on user limit structure

* sqlx prepare and clippy

* fix test maybe

.sqlx/query-80d8a5b72bf5381cb228a67d2228c014bd29995af8409ea66155820617f7172a.json

@@ -0,0 +1,28 @@
+{
+  "db_name": "PostgreSQL",
+  "query": "\n                SELECT name, icon_url FROM mods WHERE id = $1\n                ",
+  "describe": {
+    "columns": [
+      {
+        "ordinal": 0,
+        "name": "name",
+        "type_info": "Varchar"
+      },
+      {
+        "ordinal": 1,
+        "name": "icon_url",
+        "type_info": "Varchar"
+      }
+    ],
+    "parameters": {
+      "Left": [
+        "Int8"
+      ]
+    },
+    "nullable": [
+      false,
+      true
+    ]
+  },
+  "hash": "80d8a5b72bf5381cb228a67d2228c014bd29995af8409ea66155820617f7172a"
+}