[#75]: feat(proto): add support for multiple proto files

PHP8 support, refactoring

Update composer.json

Merge pull request #52 from spiral/release_1.4.1

release 1.4.1

Merge pull request #48 from spiral/release_1_4_0

release 1.4.0

release 1.3.1

Merge pull request #42 from spiral/release_1_3_0

release 1.3.0

Merge pull request #39 from spiral/release_1.2.2

release 1.2.2

Merge pull request #37 from spiral/release_1.2.1

release 1.2.1

Merge pull request #35 from spiral/feature/standalone-usage

- added the ability to work on Golang level only (without roadrunner …