- Introduce new SCF (SCC Format) library with header, implementation, and test files
- SCF is a minimal executable/linkable format focused on internal linking with external symbol import/export abstraction
- Rename lexer and lex_parser packages from 'smcc_' to 'scc_' prefix for consistency
- Update hashmap implementation to use 'scc_' prefix for types and structures
- Add build configuration for new format library with dependencies on libcore and libutils
Updated type names from `core_*` to `scc_*` across lex_parser and stream modules to maintain naming consistency within the SCC codebase. This includes changes to function signatures and internal usage of types like `core_probe_stream_t`, `core_pos_t`, and `cstring_t` to their `scc_*` counterparts.
