feat: Adds a way to find the difference in Meiliseach state and come up with a migration plan

and configuration plan depending on the state. This introduces a mechanism it or a drift engine which drill down the Meiliseach configuration
and figures out what has changed:

- settings
- primary key

depending on the change we follow a strategy wether to migrate the data or recreate the index

Signed-off-by: Farhaan Bukhsh <farhaan@opencraft.com>

Author: farhaanbukhsh