feat(lex_parser, pprocessor): replace consume with next and remove stream resets

- Replace `scc_probe_stream_consume` with `scc_probe_stream_next` for consistent stream advancement
- Remove redundant `scc_probe_stream_reset` calls before peeking, as `next` and `peek` handle state
- Update `scc_cstring_new` to `scc_cstring_create` and `scc_pos_init` to `scc_pos_create` for naming consistency
- Change `scc_pp_macro_get` parameter to `const scc_cstring_t*` for better const-correctness
- Improves code clarity and maintains proper stream position tracking

libs/lex_parser/tests/test_char.c

@@ -4,12 +4,16 @@
 
 cbool check_char(const char *str, int expect, int *output) {
     log_set_level(&__default_logger_root, 0);
-    scc_pos_t pos = scc_pos_init();
+    scc_pos_t pos = scc_pos_create();
     scc_mem_probe_stream_t mem_stream;
     scc_probe_stream_t *stream =
         scc_mem_probe_stream_init(&mem_stream, str, scc_strlen(str), false);
     *output = scc_lex_parse_char(stream, &pos);
-    return *output == expect;
+    cbool ret1 = *output == expect;
+    scc_probe_stream_reset(stream);
+    *output = scc_lex_parse_char(stream, &pos);
+    cbool ret2 = *output == expect;
+    return ret1 && ret2;
 }
 
 #define CHECK_CHAR_VALID(str, expect)                                          \