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/test/mpff.cpp

@@ -115,12 +115,12 @@ static void tst7() {
     m.display_smt2(std::cout, a); std::cout << "\n";
 }
 
-//  if (!qm.le(qa, qt)) { TRACE("mpff_bug", tout << fa << "\n" << qa << "\n" << qt << "\n";); UNREACHABLE(); }
+//  if (!qm.le(qa, qt)) { TRACE(mpff_bug, tout << fa << "\n" << qa << "\n" << qt << "\n";); UNREACHABLE(); }
 
 
 #define MK_BIN_OP(OP)                                                   \
 static void tst_ ## OP ## _core(int64_t n1, uint64_t d1, int64_t n2, uint64_t d2, unsigned precision = 2, unsigned exp = 0) { \
-    TRACE("mpff_bug", tout << n1 << "/" << d1 << ", " << n2 << "/" << d2 << "\n";); \
+    TRACE(mpff_bug, tout << n1 << "/" << d1 << ", " << n2 << "/" << d2 << "\n";); \
     unsynch_mpq_manager qm;                                             \
     scoped_mpq  qa(qm), qb(qm), qc(qm), qt(qm);                         \
                                                                         \