Add Creator state management library

[terryl1900]

Description

Hello, this is a state management library we recently open-sourced. I believe it adds value to the Flutter community. Let me know what you think. Thanks!

https://github.com/terryl1900/creator

Checklist

• I read How to contribute
• I edited the SOURCE.md file only
• Added a link to the repo in the PR

---

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[terryl1900]

@Solido friendly ping.

[Solido]

Hi Sorry for the delay, not always easy to evaluate the libs.
I close for now as it need more adoption by the community but please open this PR again then.
Best regards!

[terryl1900]

@Solido Hi, would you mind taking another look (it seems I don't have permission to re-open PR)?

Now we have some happy users and contributors, 4x GitHub stars vs the last PR, 69% pub popularity.

Additionally, I have an article about state management here, not sure if that's something you would like to include in this repo?

Thanks!

[Mercia4]

{
"Data": [
{
"id":53533933,
"phone":"+79085895281",
"operator":"tele2",
"product":"aliexpress",
"price":2,
"status":"BANNED",
"expires":"2020-06-28T16:32:43.307041Z",
"sms":[],
"created_at":"2020-06-28T16:17:43.307041Z",
"country":"russia"
}
],
"ProductNames":[],
"Statuses":[],
"Total":3
}