add custom index on History schema

[ManAnRuck]

Is it possible to add custom index by configuration (for example for the collectionId) else this will be a nice feature.

[mimani]

Hey,

Thanks for checking out and suggesting this feature which can be really helpful.

I will try to take it up but it will take some time due to my current schedule. However you can go ahead to add this and raise a PR, wIll be more than happy to add it.

Thanks