generatePages() from vsocode

[jozef-slezak]

Goal: call generatePages() from vscode extension #105

Requirements

• extend vscode intellisense on material ui data grid - list available entities from graphql introspection (you can find graphql enpoint in https://github.com/iteria-app/example-material-ui)
• use above generatePages() to generate the code
• attach screenshots / video in the pr of the solution
• manual test on this project/file https://github.com/iteria-app/example-material-ui