Move plugins to "sonar/desktop/plugins"

Summary:
Plugins moved from "sonar/desktop/src/plugins" to "sonar/desktop/plugins".

Fixed all the paths after moving.

New "desktop" folder structure:
- `src` - Flipper desktop app JS code executing in Electron Renderer (Chrome) process.
- `static` - Flipper desktop app JS code executing in Electron Main (Node.js) process.
- `plugins` - Flipper desktop JS plugins.
- `pkg` - Flipper packaging lib and CLI tool.
- `doctor` - Flipper diagnostics lib and CLI tool.
- `scripts` - Build scripts for Flipper desktop app.
- `headless` - Headless version of Flipper desktop app.
- `headless-tests` - Integration tests running agains Flipper headless version.

Reviewed By: mweststrate

Differential Revision: D20344186

fbshipit-source-id: d020da970b2ea1e001f9061a8782bfeb54e31ba0

desktop/plugins/fresco/api.tsx

@@ -0,0 +1,77 @@
+/**
+ * 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
+ */
+
+export type ImageId = string;
+
+// Listing images
+
+export type CacheInfo = {
+  cacheType: string;
+  clearKey?: string; // set this if this cache level supports clear(<key>)
+  sizeBytes: number;
+  maxSizeBytes?: number;
+  imageIds: Array<ImageId>;
+};
+
+export type ImagesList = Array<CacheInfo>;
+
+// The iOS Flipper api does not support a top-level array, so we wrap it in an object
+export type ImagesListResponse = {
+  levels: ImagesList;
+};
+
+// listImages() -> ImagesListResponse
+
+// Getting details on a specific image
+
+export type ImageBytes = string;
+
+export type ImageData = {
+  imageId: ImageId;
+  uri?: string;
+  width: number;
+  height: number;
+  sizeBytes: number;
+  data: ImageBytes;
+  surface?: string;
+};
+
+// getImage({imageId: string}) -> ImageData
+
+// Subscribing to image events (requests and prefetches)
+
+export type Timestamp = number;
+
+export type ViewportData = {
+  width: number;
+  height: number;
+  scanDisplayTime: {[scan_number: number]: Timestamp};
+};
+
+export type ImageEvent = {
+  imageIds: Array<ImageId>;
+  attribution: Array<string>;
+  startTime: Timestamp;
+  endTime: Timestamp;
+  source: string;
+  coldStart: boolean;
+  viewport?: ViewportData; // not set for prefetches
+};
+
+// Misc
+
+export type FrescoDebugOverlayEvent = {
+  enabled: boolean;
+};
+
+export type AndroidCloseableReferenceLeakEvent = {
+  identityHashCode: string;
+  className: string;
+  stacktrace: string | null;
+};