BREAKING(semver): rewrite semver

[kt3k]

continuation of #3169.

This PR rewrites semver module, and make SemVer object immutable.

Remaining tasks. We needs to restore deprecated signatures to the below APIs:

• intersects
• maxSatisfying
• minSatisfying
• minVersion
• toComparators
• validRange

closes #3164

[kt3k]

This should be ready now.

Renamed rangeTest, comparatorTest -> testRange, testComparator because the file names range_test.ts, comparator_test.ts causes multiple issues (because they are auto-detected as test files).

[kt3k]

Summary of changes:

• Remove SemVer class, instead add SemVer interface. SemVers are now represented as immutable plain objects. This closes refactor(semver): make SemVer class immutable #3164
• Deprecate string overload for semver input from APIs. (Breaking change)
• Add single-file export entrypoint for every API.

[bartlomieju]

While I haven't reviewed the actual implementation, I read through the API changes. The is gonna be quite a breakage for users, but I think it's for the better - it makes it way more obvious which operations are more costly and requires more care from the user.

LGTM

[bartlomieju]

It's great that the backwards compatibility is still preserver for know - I suggest we give it anywhere between 1-3 months before removing the deprecated API.

So maybe let's be more generous here and deprecate in 0.200.0?

[kt3k]

0.200.0 sounds good to me 👍 Updated