Foundation Classes - Tree & collection performance optimizations, move semantics, unified map API (#1065)

NCollection_UBTree/EBTree:
- Add move constructor and move assignment operators
- Replace recursive Select() and delNode() with iterative stack-based
  traversal to avoid stack overflow on deeply unbalanced trees
- Optimize EBTree::Add() and Remove() to use single-lookup TryEmplaced()
  instead of double-lookup UnBind()+Bind() / Contains()+operator()
- Remove unused DEFINE_HUBTREE / DEFINE_HEBTREE / IMPLEMENT_HUBTREE /
  IMPLEMENT_HEBTREE macros
- Remove unused includes from EBTree (Standard_Type, Standard_Transient,
  NCollection_List, Standard_Integer, NCollection_Sequence)
- Fix doxygen @param tags and comment style

NCollection_LocalArray:
- Add move constructor and move assignment operators with optimized
  three-way branching (stack-stack copy, heap-heap swap, stack-heap steal)
- Add Reallocate() method supporting grow-with-copy for use as a
  dynamically growable stack
- Add static_assert enforcing trivially copyable element type

NCollection_CellFilter:
- Replace const_cast destructive-copy hack in Cell with proper move
  semantics; delete copy constructor and copy assignment
- Add Cell constructor from CellIndex for lightweight lookup keys
- Refactor add()/iterateAdd() to accept CellIndex instead of Cell,
  use TryEmplaced() for single-lookup cell insertion
- Refactor remove()/inspect() to use Contained() API with const_cast
  instead of C-style cast on Seek()
- Change ListNode default constructor from runtime throw to = delete
- Use size_t for dimension loops and add dimension size guard in IsEqual
- Remove SUN WorkShop 5.3 workaround
- Fix typo "usially" -> "usually" in class documentation

NCollection map API unification (Contained, TryEmplace, TryBind):
- Add Contained() to all map types returning std::optional with
  std::reference_wrapper; key-only maps return const key ref,
  data maps return std::pair of const key ref + value ref
- Add TryEmplace()/TryEmplaced() to NCollection_FlatMap and
  NCollection_IndexedMap for parity with NCollection_Map
- Add TryBind() to NCollection_IndexedDataMap for parity with
  NCollection_DataMap and NCollection_FlatDataMap
- Remove Seek()/ChangeSeek() from NCollection_Map (replaced by
  Contained())

Dead compiler workaround removal:
- NCollection_DefineAlloc: remove Borland/SUN #if branch, keep only
  the version with placement delete
- NCollection_SparseArrayBase: remove SUN WorkShop 5.3 workaround

GTests:
- Add move constructor/assignment tests for LocalArray, UBTree, EBTree
- Add Contained tests for NCollection_Map
- Add CellFilter tests and UBTree deep-unbalanced-tree stress test

src/FoundationClasses/TKernel/NCollection/NCollection_SparseArrayBase.hxx

@@ -47,12 +47,7 @@ public:
 
   //!@}
 
-#if defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x530)
-public: // work-around against obsolete SUN WorkShop 5.3 compiler
-#else
 private:
-#endif
-
   /**
    * The block of data contains array of items, counter
    * and bit field, allocated as single piece of memory addressed