- Change header guard from `__SMCC_LEX_PARSER_H__` to `__SCC_LEX_PARSER_H__`
- Prefix all lexer functions with `scc_` (e.g., `lex_parse_char` → `scc_lex_parse_char`)
- Add new helper function `scc_lex_parse_is_identifier_header`
- Update references in source and test files to use new function names
- Replace `core_stream_eof` with `scc_stream_eof` for consistency
- 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.
