Add SynHighlighterAsmX86_64 (x86-64 assembler with AVX support) - #7

All changes are guarded with {$IF CompilerVersion >= NN} so that 10.4+
compiles exactly as before:

- 10.3: Screen.DefaultPixelsPerInch -> USER_DEFAULT_SCREEN_DPI,
  TControl.ClientToScreen(TRect) and per-control StyleServices(Self)
- 10.2: replaced inline variable declarations with classic var blocks,
  guarded the DPI overloads of DrawElement, GetCurrentPPI override and
  GetSystemMetricsForDPI
- 10.1: TThread.ForceQueue falls back to TThread.Queue,
  SynHighlighterManager uses the CurrentPPI helper from SynEditTypes
- 10 Seattle: TStrings.Options/Updating/TrailingLineBreak fallbacks,
  ChangeScale without isDpiChange, explicit TRect->TRectF conversions,
  IDWriteLocalizedStrings.FindLocaleName header difference, guarded
  TStringList.UseLocale, Char helper workaround on indexed PWideChar,
  TParallel.For overload resolution via typed local closure

Adds package folders for RAD Studio 10.0-10.3 (dpk with fixed LIBSUFFIX;
the IDE generates the dproj when opening the dpk).

Verified: DR+DD build with dcc32 on 10.0/10.1/10.2/10.3/10.4/11.3/12.3/13.1
and with dcc64 on 13.1.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

The list declared Get/Put/Items with an Integer index. TList.Items is
declared Items[Index: NativeInt] since Delphi 12, so on Win64 the
redeclaration no longer fully hides the inherited property: a Cardinal
argument - which the Asm highlighters pass as their hash value - binds to
TList.Items, because Cardinal -> NativeInt is lossless while
Cardinal -> Integer is not. The inherited setter does not grow the list, so
the very first keyword raises "EListError: List index out of bounds (52)".
Win32 is unaffected, both signatures are identical there.

The index type is switched conditionally: an unconditional NativeInt is
itself ambiguous on 11.3 and older (E2251).

Same entry as in the newer packages: the unit sits in Source but was not
listed anywhere, so it was never built or registered.

Rich x86-64 assembler highlighter with separate attribute classes for
registers, float/vector registers, jumps, conditional instructions, AVX
instructions, type sizes, labels and hex/octal/float/char literals.
Suitable for Keystone/Capstone/iced based assembler and disassembler views.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>