Case insensitive config parameters

[Arjentix]

@arndey mentioned that we have WSV_WASM_RUNTIME_CONFIG in upper case, but WSV_ACCOUNT_METADATA_LIMITS in lower case:
https://github.com/hyperledger/iroha/blob/iroha2-dev/docs/source/references/config.md.
Let's make them case insensitive.

[mihir1739]

Can I work on this ? If I could be assigned this issue it would be even better.

[appetrosyan]

if you know what you're doing, go ahead.

Before you start, make sure you have

rustup toolchain add nightlly-2022-12-22

and read Contributing.md. Make sure your commits are signed-off (git commit -s) and that you don't use more commits than necessary (one per issue is fine, just amend the previous one, or squash before or during rebase). Try to avoid updating from upstream via merge, use rebase git pull --rebase).

I'm assigning the issue to you. Let's keep in touch.

[mversic]

@mihir1739 any progress on this one?

[mversic]

this should not be an issue anymore after #2585