correct keyword versioning

[OmarTawfik]

• Split every KeywordItem into multiple KeywordDefinitions, each having their own versioning. This is to account for things like fixed8x8 and fixed256x80 being reserved/unreserved in different versions.
• Duplicate keywords between Solidity and Yul, since the same keyword can be reserved in different versions between the two.
• Now all keywords have correct versioning.
• Added a script that will fetch solc binaries and test all variants of keywords (10777) against the actual compiler output. It has a few hacks around parsing/skipping errors, so it is not stable enough (yet) to run in CI/unguided, but it definitely helped running locally and observing the output.

[changeset-bot]

⚠️ No Changeset found

Latest commit: c57ffe7

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR