Feature: Display loader while loading results

[C-Flatla]

What's in this PR?

This PR adds a listLoaderComponent prop to enable showing a loading component while results are loading

Quick summary of the changes you made.

• Added a listLoaderComponent prop

Any necessary explanation of decisions you made

• This will be passed as the listEmptyComponent to the FlatList while the requests are in flight
• Defaults to not showing any loading indicator
• This PR is very similar to https://github.com/FaridSafi/react-native-google-places-autocomplete/pull/720

Before

https://user-images.githubusercontent.com/5545625/120728953-37cba500-c49b-11eb-9e07-a8f6f1deabea.mov

After

https://user-images.githubusercontent.com/5545625/120728067-50d35680-c499-11eb-85e1-27cb0ca5b7f5.mov

[eyalabs]

When is this going to be merged?

[C-Flatla]

@eyalabs 🤷 Still waiting for it to be reviewed

[eyalabs]

@gruckion who can merge this?

[rick427]

Still waiting for this feature

[C-Flatla]

@v-x2 or @gruckion could we merge this, please? I've fixed the merge conflicts.

Sorry for the delay, I was on parental leave.

[SaadBazaz]

Why isn't this being merged? Enable it with a flag and we can move on with it.

[jbcrestot]

please merge it 🙏

[wegethertravel]

Could we please merge this, this is really neat feature and we are having trouble outside of this component trying to accomplish the same.

[wegethertravel]

@FaridSafi could you kindly merge this?

[Parmar-Bansi]

hello any one help me..

listLoaderComponent={() => { return <Text style={{backgroundColor: 'red'}}>loading...</Text>; }}

not working...

[jbcrestot]

closed by #909 ?