further validation for _IBC data files

[boojamya]

This PR adds further validation for json files in the _IBC folder.

Workflow has been tested on a fork.

It performs three validations:

• validates that the json file name has two "strings" separated by a hyphen (-) and ends with ".json"
• validates that chain_1 and chain_2 used in the file name are in alphabetical order
• validates that the chain-name for chain-1 and chain-2 inside the json file match the order used in the file name

Consider merging before #369 ?

[JeremyParish69]

love the idea, @boojamya . Could we and should we add verifying that the chain names used are folders that exist in the chain reg? Or would that be too limiting (in case we want to add for a chain that isn't registered)?

[boojamya]

I don't think it's completely necessary but happy to add it in!
Your call here. Easy add.

[JeremyParish69]

I don't think it's completely necessary but happy to add it in! Your call here. Easy add.

Alright, let's do it. Thanks

[boojamya]

@JeremyParish69 Done!