Feat: migrate local dev server to Amplify AppSync Simulator

[maoosi]

Related issues that this feature will resolve:

• https://github.com/maoosi/prisma-appsync/issues/137
• https://github.com/maoosi/prisma-appsync/issues/112

Considerations:

• https://github.com/maoosi/prisma-appsync/pull/143

[maoosi]

Will be released as part of 1.0.0-rc.7.

[cipriancaba]

Legend 💪