[ncl] Some improvements to the hash placeholders demo (#22134)

Co-authored-by: Tomasz Sapeta <[email protected]>

[expo-image] Add expo-image test app to NCL (#7345)

* [expo-image] Add expo-image test app to NCL

* [expo-impage] Add source tests

* [expo-image] Add option to select next/prev test

* [expo

[expo-image] Add expo-image test app to NCL (#7345)

* [expo-image] Add expo-image test app to NCL

* [expo-impage] Add source tests

* [expo-image] Add option to select next/prev test

* [expo-image] Rename tests

* [expo-image] Show scrollview with all tests compared to RN Image component

* [expo-image] Add button to switch to category view to test app

* [expo-image] Update icon in NCL

* [expo-image] Update test-app to use expo-image component

* [expo-image] Remove old ExpoImage test from NCL

* [expo-image] Fix test-app on web

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