refactor(server): centralize server options

packages/server/src/options.ts

@@ -0,0 +1,10 @@
+import type { Database } from "@opencode-ai/core/database/database"
+import type { ModelsDev } from "@opencode-ai/core/models-dev"
+
+export interface ServerOptions {
+  readonly hostname?: string
+  readonly port?: number
+  readonly password?: string
+  readonly database?: Database.Options
+  readonly models?: ModelsDev.Options
+}