Centralize and document TRACE tags using X-macros (#7657)

* Introduce X-macro-based trace tag definition
- Created trace_tags.def to centralize TRACE tag definitions
- Each tag includes a symbolic name and description
- Set up enum class TraceTag for type-safe usage in TRACE macros

* Add script to generate Markdown documentation from trace_tags.def
- Python script parses trace_tags.def and outputs trace_tags.md

* Refactor TRACE_NEW to prepend TraceTag and pass enum to is_trace_enabled

* trace: improve trace tag handling system with hierarchical tagging

- Introduce hierarchical tag-class structure: enabling a tag class activates all child tags
- Unify TRACE, STRACE, SCTRACE, and CTRACE under enum TraceTag
- Implement initial version of trace_tag.def using X(tag, tag_class, description)
  (class names and descriptions to be refined in a future update)

* trace: replace all string-based TRACE tags with enum TraceTag
- Migrated all TRACE, STRACE, SCTRACE, and CTRACE macros to use enum TraceTag values instead of raw string literals

* trace : add cstring header

* trace : Add Markdown documentation generation from trace_tags.def via mk_api_doc.py

* trace : rename macro parameter 'class' to 'tag_class' and remove Unicode comment in trace_tags.h.

* trace : Add TODO comment for future implementation of tag_class activation

* trace : Disable code related to tag_class until implementation is ready (#7663).

src/ast/expr2polynomial.cpp

@@ -368,7 +368,7 @@ struct expr2polynomial::imp {
                 checkpoint();
                 frame & fr = m_frame_stack.back();
                 app * a = fr.m_curr;
-                TRACE("expr2polynomial", tout << "processing: " << fr.m_idx << "\n" << mk_ismt2_pp(a, m()) << "\n";);
+                TRACE(expr2polynomial, tout << "processing: " << fr.m_idx << "\n" << mk_ismt2_pp(a, m()) << "\n";);
                 unsigned num_args = a->get_num_args();
                 while (fr.m_idx < num_args) {
                     expr * arg = a->get_arg(fr.m_idx);