feat(logging): add log level env variable (#2299)

packages/log/src/env.ts

@@ -0,0 +1,10 @@
+import { z } from "zod";
+
+import { createEnv } from "@homarr/env";
+
+export const env = createEnv({
+  server: {
+    LOG_LEVEL: z.enum(["debug", "info", "warn", "error"]).default("info"),
+  },
+  experimental__runtimeEnv: process.env,
+});