Add API key auth

https://feedback.yaak.app/p/header-as-auth-option

plugins/auth-apikey/src/index.ts

@@ -0,0 +1,53 @@
+import type { PluginDefinition } from '@yaakapp/api';
+
+export const plugin: PluginDefinition = {
+  authentication: {
+    name: 'apikey',
+    label: 'API Key',
+    shortLabel: 'API Key',
+    args: [
+      {
+        type: 'select',
+        name: 'location',
+        label: 'Behavior',
+        defaultValue: 'header',
+        options: [
+          { label: 'Insert Header', value: 'header' },
+          { label: 'Append Query Parameter', value: 'query' },
+        ],
+      },
+      {
+        type: 'text',
+        name: 'key',
+        label: 'Key',
+        dynamic: (_ctx, { values }) => {
+          return values.location === 'query' ? {
+            label: 'Parameter Name',
+            description: 'The name of the query parameter to add to the request',
+          } : {
+            label: 'Header Name',
+            description: 'The name of the header to add to the request',
+          };
+        },
+      },
+      {
+        type: 'text',
+        name: 'value',
+        label: 'API Key',
+        optional: true,
+        password: true,
+      },
+    ],
+    async onApply(_ctx, { values }) {
+      const key = String(values.key ?? '');
+      const value = String(values.value ?? '');
+      const location = String(values.location);
+
+      if (location === 'query') {
+        return { setQueryParameters: [{ name: key, value }] };
+      } else {
+        return { setHeaders: [{ name: key, value }] };
+      }
+    },
+  },
+};