Add auth plugins

plugins/auth-basic/src/index.ts

@@ -0,0 +1,28 @@
+import { PluginDefinition } from '@yaakapp/api';
+
+export const plugin: PluginDefinition = {
+  authentication: {
+    name: 'Basic',
+    config: [{
+      type: 'text',
+      name: 'username',
+      label: 'Username',
+      optional: true,
+    }, {
+      type: 'text',
+      name: 'password',
+      label: 'Password',
+      optional: true,
+    }],
+    async onApply(_ctx: any, args: any): Promise<any> {
+      const { username, password } = args.config;
+      return {
+        url: args.url,
+        headers: [{
+          name: 'Authorization',
+          value: 'Basic ' + Buffer.from(`${username}:${password}`).toString('base64'),
+        }],
+      };
+    },
+  },
+};