move structs from heap to stable struct in individual user template canister

[ravibazz]

Description

Move few of the structs inside CanisterData of Individual_user_template to stable memory

Proposed Changes

• Introduce memory manager to deal with heap data along with stable memory data.
• Add structs room_details_map and bet_details_map to flatten out the structure and store it in stable memory.
• Move api's from using heap data to stable data

[ravibazz]

Before carrying any out any further upgrades this issue #201 needs to fixed