Add Masterminds/semver — semantic version parsing library (Go, zero deps)

[canolgun]

Masterminds/semver is a widely-used Go library for semantic version parsing,
constraint matching, and version comparison. It has zero external dependencies
and 3K+ GitHub stars, making it an ideal OSS-Fuzz candidate.

Fuzz targets (4 new)

Target	Coverage
FuzzVersionCompare	Comparison invariants, antisymmetry, LessThan/GreaterThan/Equal consistency, nil safety
FuzzVersionRoundTrip	Parse → String → Parse → Equal cycle
FuzzIncOverflow	MaxUint64 overflow on IncPatch/IncMinor/IncMajor, panic recovery, increment invariants
FuzzConstraintVersionCheck	Constraint × Version integration, nil Check/Validate on invalid input

Upstream fuzz targets (3 existing, enriched)

The upstream repo already has 3 fuzz targets (FuzzNewVersion, FuzzStrictNewVersion, FuzzNewConstraint). This integration adds 4 additional targets focusing on invariants, overflow safety, and nil-pointer resilience.

Sanitizers

• address
• memory

Fuzzing engine

• libfuzzer (Go native fuzz)

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[github-actions]

canolgun-commits is integrating a new project:
- Main repo: https://github.com/dgraph-io/badger
- Criticality score: 0.52286
canolgun-commits is integrating a new project:
- Main repo: https://github.com/dgraph-io/badger
- Criticality score: 0.52286
canolgun-commits is integrating a new project:
- Main repo: https://github.com/dgraph-io/badger
- Criticality score: 0.52286
canolgun-commits is integrating a new project:
- Main repo: https://github.com/dgraph-io/badger
- Criticality score: 0.52286
canolgun-commits is integrating a new project:
- Main repo: https://github.com/dgraph-io/badger
- Criticality score: 0.52286
canolgun-commits is integrating a new project:
- Main repo: https://github.com/dgraph-io/badger
- Criticality score: 0.52286
canolgun-commits is integrating a new project:
- Main repo: https://github.com/dgraph-io/badger
- Criticality score: 0.52286
canolgun-commits is integrating a new project:
- Main repo: https://github.com/dgraph-io/badger
- Criticality score: 0.52286

[canolgun]

@googlebot I signed it!

[canolgun]

I have signed the Google CLA (canolgun@gmail.com). The CLA check at https://cla.developers.google.com/ shows signed. Please re-trigger the check.

[canolgun]

CLA should now be linked to GitHub username canolgun-commits. @googlebot please recheck.

[canolgun]

Merged into #15627 — all 10 integrations now in one PR.