Minor updates

Go & Tooling Upgrade

• Bumped Go version from 1.21 to 1.25 in go.mod
• Migrated golangci-lint config to v2 format (.golangci.yml): updated schema (version: "2"), replaced deprecated fields (deadline → timeout, disable-all → default: none), moved formatters to a separate section, restructured linter settings and exclusion rules

Bug Fixes

• Fixed INN generation logic — Generate() and GenerateLegal() now select from a defined _supportedTypes slice instead of using fragile modular arithmetic on random digits
• Removed stray debug fmt.Println in ogrn/models.go OGRN parsing
• Fixed unit test issues identified by updated linter and corrected logic

Refactoring

• Cleaned up test files across bik, inn, kpp, ogrn, ogrnip, okato, snils, and utils — removed redundant assertions and unused variables flagged by the new linter config
• Added ForeignLegal to supported INN types via _supportedTypes slice
• Added protobuf enum compatibility support for INN type (t field set in NewINN)
• Updated CI workflow (.github/workflows/go.yml) to match new tooling
• Updated parser submodule dependencies (parser/okato-states, parser/subjects)

Add OGRN and OGRNIP codes

Merge pull request #18 from sshaplygin/sshaplygin-patch-2

Update README.md

Added KPP code

Added KPP code and refactored INN code

Added BIK code

Added BIK code with next methods:

• Validate
• Exists
• Generate

Changed project layout

Merge pull request #7 from sshaplygin/ref-struct

ref project struct