added exosama network configs and chainspec

[ghost]

Changes:

• Added Exosama Network configs and chainspec.

Types of changes

What types of changes does your code introduce?
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Other (please describe): Exosama Network configs and chainspec

Testing

Requires testing

• Yes
• No

[LukaszRozmej]

@rubo can we confirm we can sync it?
@tuimf if you want auto-pivot update please add it here: https://github.com/NethermindEth/nethermind/blob/master/scripts/syncSettings.py#L94-L98

[rubo]

@LukaszRozmej I didn't finish the sync, but running with this config, it syncs normally.

[ghost]

@rubo can we confirm we can sync it? @tuimf if you want auto-pivot update please add it here: https://github.com/NethermindEth/nethermind/blob/master/scripts/syncSettings.py#L94-L98

@LukaszRozmej auto-pivot settings added, thanks!

[rubo]

@tuimf, thank you for contributing to Nethermind.