feat: convert config struct to proto message

cmd/semantic-release/main.go

pkg/analyzer/commit_analyzer.pb.go

pkg/analyzer/commit_analyzer_grpc.pb.go

pkg/condition/ci_condition.pb.go

pkg/condition/ci_condition_grpc.pb.go

pkg/config/config.go

pkg/config/config.pb.go

pkg/config/config.proto

pkg/generator/changelog_generator.pb.go

pkg/generator/changelog_generator_grpc.pb.go

pkg/hooks/hooks.pb.go

pkg/hooks/hooks_grpc.pb.go

pkg/plugin/manager/manager.go

pkg/provider/provider.pb.go

pkg/provider/provider_grpc.pb.go

pkg/semrel/structs.pb.go

pkg/updater/updater.pb.go

pkg/updater/updater_grpc.pb.go