Add project-level environment variables

Co-Authored-By: Paperclip <noreply@paperclip.ing>

packages/db/src/migrations/0050_stiff_luckman.sql

@@ -0,0 +1 @@
+ALTER TABLE "projects" ADD COLUMN IF NOT EXISTS "env" jsonb;

packages/db/src/migrations/meta/_journal.json

@@ -351,6 +351,13 @@
       "when": 1775349863293,
       "tag": "0049_flawless_abomination",
       "breakpoints": true
+    },
+    {
+      "idx": 50,
+      "version": "7",
+      "when": 1775487782768,
+      "tag": "0050_stiff_luckman",
+      "breakpoints": true
     }
   ]
 }