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_skip_block_comment.c

@@ -4,12 +4,13 @@
 
 void check_skip_block_comment(const char *str, const char *expect_remaining) {
     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);
 
     scc_lex_parse_skip_block_comment(stream, &pos);
+    scc_probe_stream_sync(stream);
 
     // Check remaining content
     char buffer[256] = {0};