docs(README.md): Indicate WIP

Rename operator.config to ssc.config

chore(): rename

chore(): snapshot before rename

refactor(): more clean progress and clean up

refactor(tests): use variadic magic for tests configuration

refactor(include/opc/platform.h): introduce 'opc_chars()'

chore(Makefile): make 'clang-tidy' quiet

.chore(.github/workflows/tests.yml): add 'clang-tidy', fix typo

refactor(): working example, clean up, a lot of tests

chore(.gitignore): ignore tests binaries

refactor(): clean up, tidy, etc

refactor(): run 'clang-check' on source

refactor(): fix absolute paths

fix(): fix usage of 'realpath'