Support loading XML assets

[Abbondanzo]

Summary: Adds support for the xml file extension as a loadable asset, and lets Flow treat the type signature as an image

Changelog: [Internal]

Differential Revision: D58261501

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D58261501

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	21,284,135	-1,697
android	hermes	armeabi-v7a	n/a	--
android	hermes	x86	n/a	--
android	hermes	x86_64	n/a	--
android	jsc	arm64-v8a	24,481,175	-1,064
android	jsc	armeabi-v7a	n/a	--
android	jsc	x86	n/a	--
android	jsc	x86_64	n/a	--

Base commit: c0d56225a8f3fbf1d3b53aecb6a8dc9879097a4b Branch: main

[facebook-github-bot]

This pull request has been merged in facebook/react-native@0ad437390c1fe0790cdcaf132df4508b6b3b9edb.

[react-native-bot]

This pull request was successfully merged by Peter Abbondanzo in 0ad437390c1fe0790cdcaf132df4508b6b3b9edb

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