feat: add SCF format library and rename components to SCC prefix
- 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
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