v0.6.2 - Retour en onefile, suppression _internal

Changements :
- Retour a --onefile : exe unique, plus besoin de _internal/
- Le fix Zone.Identifier (v0.5.9) resout le probleme de DLL pour les exe telecharges
- Suppression de _internal/ du repo et ajout au .gitignore
- build.bat simplifie

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

_internal/_tcl_data/msgs/ms.msg

@@ -1,47 +0,0 @@
-# created by tools/loadICU.tcl -- do not edit
-namespace eval ::tcl::clock {
-    ::msgcat::mcset ms DAYS_OF_WEEK_ABBREV [list \
-        "Aha"\
-        "Isn"\
-        "Sei"\
-        "Rab"\
-        "Kha"\
-        "Jum"\
-        "Sab"]
-    ::msgcat::mcset ms DAYS_OF_WEEK_FULL [list \
-        "Ahad"\
-        "Isnin"\
-        "Selasa"\
-        "Rahu"\
-        "Khamis"\
-        "Jumaat"\
-        "Sabtu"]
-    ::msgcat::mcset ms MONTHS_ABBREV [list \
-        "Jan"\
-        "Feb"\
-        "Mac"\
-        "Apr"\
-        "Mei"\
-        "Jun"\
-        "Jul"\
-        "Ogos"\
-        "Sep"\
-        "Okt"\
-        "Nov"\
-        "Dis"\
-        ""]
-    ::msgcat::mcset ms MONTHS_FULL [list \
-        "Januari"\
-        "Februari"\
-        "Mac"\
-        "April"\
-        "Mei"\
-        "Jun"\
-        "Julai"\
-        "Ogos"\
-        "September"\
-        "Oktober"\
-        "November"\
-        "Disember"\
-        ""]
-}