Use the single type representing plugins

Summary: Use interface PluginDetails everywhere where plugins are handled and removed PluginDefinition type which was effectively a subset of PluginDetails

Reviewed By: mweststrate

Differential Revision: D21927456

fbshipit-source-id: 434ebeef955b922cc11757e78fbba8dec05f1060

desktop/plugin-lib/src/pluginPaths.ts

@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import path from 'path';
+import {homedir} from 'os';
+
+export const flipperDataDir = path.join(homedir(), '.flipper');
+
+export const pluginInstallationDir = path.join(flipperDataDir, 'thirdparty');
+
+export const pluginCacheDir = path.join(flipperDataDir, 'plugins');