[PERF] Make encryption/decryption operations concurrent while struct constructions

[NishantJoshi00]

Description

While constructing domain types for storage models we are performing encryption/decryption of the fields sequentially while constructing the struct. A performance improvement that we could introduce is where we perform those operations concurrently.

Optimizable Locations

• ./crates/router/src/types/domain/types.rs [163 - 174]
• ./crates/router/src/types/domain/merchant_account.rs [165 - 169]
• ./crates/router/src/types/domain/address.rs [83 - 90]
• ./crates/router/src/types/domain/customer.rs [63 - 65]
• ./crates/router/src/core/payments/helpers.rs [119 - 1111]
• ./crates/router/src/core/customers.rs [57 - 416]
• ./crates/router/src/core/admin.rs [151 - 678]

Suggestions

We can consider using a pre-build library similar to conquer_struct or re-implement a similar behaviour for our use case

[NavinShrinivas]

Hey, I'd like to work on this!