feat: initial setup for nuxt devtools

src/types/index.ts

@@ -0,0 +1,3 @@
+export * from './rpc'
+export * from './server-ctx'
+export * from './module-options'

src/types/module-options.ts

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+import type { ConnectOptions } from 'mongoose'
+
+export interface ModuleOptions {
+  uri: string
+  devtools: boolean
+  options?: ConnectOptions
+}

src/types/rpc.ts

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+export interface ServerFunctions {
+  listCollections(): Promise<any>
+}
+
+export interface ClientFunctions {
+  refresh(type: string): void
+}

src/types/server-ctx.ts

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+import type { BirpcGroup } from 'birpc'
+import type { Nuxt } from 'nuxt/schema'
+import type { ClientFunctions, ServerFunctions } from './rpc'
+import type { ModuleOptions } from './module-options'
+
+export interface NuxtDevtoolsServerContext {
+  nuxt: Nuxt
+  options: ModuleOptions
+
+  rpc: BirpcGroup<ClientFunctions, ServerFunctions>
+
+  refresh: (event: keyof ServerFunctions) => void
+
+  extendServerRpc: <ClientFunctions = {}, ServerFunctions = {}>(name: string, functions: ServerFunctions) => BirpcGroup<ClientFunctions, ServerFunctions>
+}