Add HDX chainlink oracle adapter

[jak-pan]

We need to add oracle for money market to accept HDX

[dmoka]

We have a similar issue supporting other use cases, we should possible merge them: #874

[jak-pan]

We have a similar issue supporting other use cases, we should possible merge them: #874

These are 2 different (quasi-opposite) issues. In this one we need to export HDX price to EVM in compatible manner to be able to use it in money market.

In the other one we want to use our EVM oracles and merge with our on-chain oracles to improve the existing on-chain checks

[mrq1911]

precompile will emulate AggregatorInterface https://github.com/aave/aave-v3-core/blob/6099f84733fbfe8c4738e0cd8c7b4637d8e8f0a9/contracts/dependencies/chainlink/AggregatorInterface.sol#L5

mainly getAnswer function

precompile address will be encoded asset id pair, source and duration and we have to make sure there is fake code in storage for those

[mrq1911]

bonus: refactor the way how we register oracles - see moonbeam one, its way cleaner and more safe as you explicitly define all precompile params https://github.com/moonbeam-foundation/moonbeam/blob/f9cde1f74a19cb7fb748e89784ee253136bdebf3/runtime/moonbeam/src/precompiles.rs#L126-L125