Standardise inheriting NatSpec from the interface contract

[parv3213]

Currently, only a few of our functions have their definitions in their interface, resulting in only their NatSpec documentation being inherited from the interface. To align with best practices, we should update all our interfaces to include all external and public functions along with their NatSpec documentation.

For example, in this repository (https://github.com/Uniswap/v3-core/blob/main/contracts/UniswapV3Pool.sol), documentation for all external and public functions is inherited from its interface. Additionally, if you observe, the interface even defines the public variables.