Add types for backend response

package.json

@@ -1,6 +1,6 @@
 {
   "license": "MIT",
-  "version": "1.0.0-alpha.8",
+  "version": "1.0.0-alpha.9",
   "name": "@flaschengeist/types",
   "author": "Ferdinand Thiessen <rpm@fthiessen.de>",
   "homepage": "https://flaschengeist.dev/",

types/PEP440.d.ts

@@ -0,0 +1,14 @@
+/* This is some sort of PEP440 subset */
+type Join<T extends unknown[], D extends string> = T extends []
+  ? ''
+  : T extends [string | number | boolean | bigint]
+  ? `${T[0]}`
+  : T extends [string | number | boolean | bigint, ...infer U]
+  ? `${T[0]}${D}${Join<U, D>}`
+  : string;
+type BaseVersion = Join<[number, number], '.'> | Join<[number, number, number], '.'>;
+type PreRelease = Join<[['a' | 'b' | 'rc'], number], '.'>;
+type PRVersion = BaseVersion | `${BaseVersion}${PreRelease}`;
+
+/** A PEP440 subset used to describe backend module versions */
+declare type PEP440Version = PRVersion | `${PRVersion}.dev${number}`;

types/flaschengeist.d.ts

@@ -1,8 +1,17 @@
+/// <reference path="PEP440.d.ts" />
 /**
  * Types used for communicating with the API
  */
 
 declare namespace FG {
+  interface BackendPlugin {
+    permissions: string[];
+    version: PEP440Version;
+  }
+  interface Backend {
+    plugins: {[key: string]: BackendPlugin};
+    version: PEP440Version;
+  }
   interface Notification {
     id: number;
     plugin: string;

types/index.d.ts

@@ -1,3 +1,4 @@
 /// <reference path="flaschengeist.d.ts" />
+/// <reference path="PEP440.d.ts" />
 
 export * from './plugin';

types/plugin.d.ts

@@ -1,3 +1,4 @@
+/// <reference path="PEP440.d.ts" />
 import type { RouteLocationRaw, RouteRecordRaw, RouteRecordName } from 'vue-router';
 import type { Component } from '@vue/runtime-core';
 
@@ -6,20 +7,6 @@ import type { Component } from '@vue/runtime-core';
  *  + Additional types for plugin interaction with the core
  */
 
-/* This is some sort of PEP440 subset */
-type Join<T extends unknown[], D extends string> = T extends []
-  ? ''
-  : T extends [string | number | boolean | bigint]
-  ? `${T[0]}`
-  : T extends [string | number | boolean | bigint, ...infer U]
-  ? `${T[0]}${D}${Join<U, D>}`
-  : string;
-type BaseVersion = Join<[number, number], '.'> | Join<[number, number, number], '.'>;
-type PreRelease = Join<[['a' | 'b' | 'rc'], number], '.'>;
-type PRVersion = BaseVersion | `${BaseVersion}${PreRelease}`;
-/** A PEP440 subset used to describe backend module versions */
-export type PEP440Version = PRVersion | `${PRVersion}.dev${number}`;
-
 export namespace FG_Plugin {
   /**
    * Interface defining a Flaschengeist plugin