build(api): add Railway configuration

Author: jonahsnider

Procfile

@@ -0,0 +1 @@
+release: yarn migrate:apply

railway.json

@@ -0,0 +1,16 @@
+{
+	"$schema": "https://railway.app/railway.schema.json",
+	"build": {
+		"builder": "NIXPACKS",
+		"buildCommand": "yarn workspace @interval.so/api build"
+	},
+	"deploy": {
+		"healthcheckPath": "/health",
+		"healthcheckTimeout": 10,
+		"numReplicas": 1,
+		"restartPolicyMaxRetries": 3,
+		"restartPolicyType": "ALWAYS",
+		"startCommand": "node ./apps/api/build/bin/server.js",
+		"runtime": "V2"
+	}
+}