Add GIF select to composer (#3600)

* create dialog with flatlist in it

* use alf for composer photos/camera/gif buttons

* add gif icons

* focus textinput on gif dialog close

* add giphy API + gif grid

* web support

* add consent confirmation

* track gif select

* desktop web consent styles

* use InlineLinkText instead of Link

* add error/loading state

* hide sideborders on web

* disable composer buttons where necessary

* skip cardyb and set thumbnail directly

* switch legacy analytics to statsig

* remove autoplay prop

* disable photo/gif buttons if external media is present

* memoize listmaybeplaceholder

* fix pagination

* don't set `value` of TextInput, clear via ref

* remove console.log

* close modal if press escape

* pass alt text in the description

* Fix typo

* Rm dialog

---------

Co-authored-by: Dan Abramov <dan.abramov@gmail.com>

src/components/Dialog/index.web.tsx

@@ -1,5 +1,10 @@
 import React, {useImperativeHandle} from 'react'
-import {TouchableWithoutFeedback, View} from 'react-native'
+import {
+  FlatList,
+  FlatListProps,
+  TouchableWithoutFeedback,
+  View,
+} from 'react-native'
 import Animated, {FadeIn, FadeInDown} from 'react-native-reanimated'
 import {msg} from '@lingui/macro'
 import {useLingui} from '@lingui/react'
@@ -192,6 +197,17 @@ export function Inner({
 
 export const ScrollableInner = Inner
 
+export function InnerFlatList({
+  label,
+  ...props
+}: FlatListProps<any> & {label: string}) {
+  return (
+    <Inner label={label}>
+      <FlatList {...props} />
+    </Inner>
+  )
+}
+
 export function Handle() {
   return null
 }