feat(lex_parser, pprocessor): rename identifier header check and add macro system

- Rename `scc_lex_parse_is_identifier_header` to `scc_lex_parse_is_identifier_prefix` for clarity and add a TODO comment
- Update lexer to use the renamed function for consistency
- Fix package and dependency names in `cbuild.toml` (`smcc_pprocesser` → `scc_pprocesser`, `smcc_lex_parser` → `lex_parser`)
- Introduce new macro system with header file `pp_macro.h` defining macro types, structures, and management functions
- Refactor preprocessor initialization and cleanup in `pprocessor.c` to use new macro table and stream handling
- Replace legacy `hashmap` with `scc_pp_macro_table_t` for macro storage
- Improve error handling and resource management in preprocessor lifecycle

libs/pprocessor/tests/test_run.c

@@ -2,19 +2,19 @@
 #include <stdio.h>
 
 int main(void) {
-    smcc_pp_t pp;
-    core_mem_stream_t input;
-    core_stream_t *output;
+    scc_pproc_t pp;
+    scc_mem_probe_stream_t input;
+    scc_probe_stream_t *output;
 
     const char buf[] = "#define A 123 \"asd\"\nA A A\n";
-    output =
-        pp_init(&pp, core_mem_stream_init(&input, buf, sizeof(buf) - 1, false));
+    output = scc_pproc_init(
+        &pp, scc_mem_probe_stream_init(&input, buf, sizeof(buf) - 1, false));
 
     int ch = 0;
 
     while (1) {
-        ch = core_stream_next_char(output);
-        if (ch == core_stream_eof) {
+        ch = scc_probe_stream_consume(output);
+        if (ch == scc_stream_eof) {
             break;
         }
         putc(ch, stdout);