Update all position tracking calls in lex_parser.c to use the scc_pos_* function family (scc_pos_next, scc_pos_next_line) instead of the deprecated core_pos_* variants. This ensures consistency with the scc naming convention and prepares for future removal of the old core functions.
- 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.
- Rename `cstring_push` to `cstring_append_ch` and `cstring_push_cstr` to `cstring_append_cstr` for consistent naming with new `cstring_append` function
- Update all callers in lexer and tests to use new function names
- Rename stream `destroy` method to `drop` for consistency with resource management conventions
- Fix potential overflow in string capacity calculation by adjusting growth logic
