[packages] Add @deprecated annotations to deprecated APIs (expo#9959)

# Why

_This follows the TS 4.0 update PR: #9960_

Typescript 4.0 comes with support for `@deprecated` annotations, which gives nice VS Code (and probably other IDE) messages informing users about API deprecation. It also marks deprecated methods/properties with ~~Strikethrough~~.

See [this](https://devblogs.microsoft.com/typescript/announcing-typescript-4-0/#deprecated-support) and microsoft/TypeScript#38523

# How

- Added appropriate annotations to every possible deprecated Expo API that I found.
- Updated existing comments to play nice with VS Code messages

Also, added note about dead code in Notifications, which is related to expo#9563 (I forgot to add it then)

> Not sure what to do with changelogs ❓ 

# Test Plan

Tested messages in VS Code with _TS 4.0.2_ enabled.

Author: barthap

build/Audio/Recording.d.ts

@@ -120,6 +120,7 @@ export declare class Recording {
     pauseAsync(): Promise<RecordingStatus>;
     stopAndUnloadAsync(): Promise<RecordingStatus>;
     getURI(): string | null;
+    /** @deprecated Use `createNewLoadedSoundAsync()` instead */
     createNewLoadedSound(initialStatus?: AVPlaybackStatusToSet, onPlaybackStatusUpdate?: ((status: AVPlaybackStatus) => void) | null): Promise<{
         sound: Sound;
         status: AVPlaybackStatus;

build/Audio/Recording.js

@@ -14,6 +14,7 @@ export declare class Sound implements Playback {
     _eventEmitter: EventEmitter;
     _coalesceStatusUpdatesInMillis: number;
     _onPlaybackStatusUpdate: ((status: AVPlaybackStatus) => void) | null;
+    /** @deprecated Use `Sound.createAsync()` instead */
     static create: (source: AVPlaybackSource, initialStatus?: AVPlaybackStatusToSet, onPlaybackStatusUpdate?: ((status: AVPlaybackStatus) => void) | null, downloadFirst?: boolean) => Promise<{
         sound: Sound;
         status: AVPlaybackStatus;

build/Audio/Recording.js.map

@@ -365,6 +365,7 @@ export class Recording {
     return this._uri;
   }
 
+  /** @deprecated Use `createNewLoadedSoundAsync()` instead */
   async createNewLoadedSound(
     initialStatus: AVPlaybackStatusToSet = {},
     onPlaybackStatusUpdate: ((status: AVPlaybackStatus) => void) | null = null

build/Audio/Sound.d.ts

@@ -26,6 +26,7 @@ export class Sound implements Playback {
   _coalesceStatusUpdatesInMillis: number = 100;
   _onPlaybackStatusUpdate: ((status: AVPlaybackStatus) => void) | null = null;
 
+  /** @deprecated Use `Sound.createAsync()` instead */
   static create = async (
     source: AVPlaybackSource,
     initialStatus: AVPlaybackStatusToSet = {},