Remove Nethermind.Native project

[rubo]

Changes

• Replaced Nethermind.Crypto.Bls.ShamatarLib with the new Nethermind.Crypto.Pairings NuGet package
• Revised namings. Hence, the big number of changed files. NO functionality changes in our code.
  • Dropped Shamatar naming everywhere to eliminate any confusion
  • Changed BN256 to the correct BN254 one everywhere (metrics included)
• Removed Nethermind.Native project as no longer needed

Types of changes

What types of changes does your code introduce?

• Bugfix (a non-breaking change that fixes an issue)
• New feature (a non-breaking change that adds functionality)
• Breaking change (a change that causes existing functionality not to work as expected)
• Optimization
• Refactoring
• Documentation update
• Build-related changes
• Other: Description

Testing

Requires testing

• Yes
• No

If yes, did you write tests?

• Yes
• No

Notes on testing

The current EVM tests cover this.

Remarks

With this PR, we no longer have any native libraries in this repo. All those libraries are packed in their NuGet packages respectively.

The package source code is available here.

[LukaszRozmej]

Where does Nethermind.Crypto.Pairings live?
Maybe we should add into our Readme file all the other repos/packages that are related?

[rubo]

@LukaszRozmej The package source code is indicated in the Remarks section. Also, all Nethermind packages follow NuGet guidelines and best practices and have all the info needed on their NuGet page. The link to that page is in the description. No need to bloat README with that stuff.