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/sw.msg

@@ -1,49 +0,0 @@
-# created by tools/loadICU.tcl -- do not edit
-namespace eval ::tcl::clock {
-    ::msgcat::mcset sw DAYS_OF_WEEK_ABBREV [list \
-        "Jpi"\
-        "Jtt"\
-        "Jnn"\
-        "Jtn"\
-        "Alh"\
-        "Iju"\
-        "Jmo"]
-    ::msgcat::mcset sw DAYS_OF_WEEK_FULL [list \
-        "Jumapili"\
-        "Jumatatu"\
-        "Jumanne"\
-        "Jumatano"\
-        "Alhamisi"\
-        "Ijumaa"\
-        "Jumamosi"]
-    ::msgcat::mcset sw MONTHS_ABBREV [list \
-        "Jan"\
-        "Feb"\
-        "Mar"\
-        "Apr"\
-        "Mei"\
-        "Jun"\
-        "Jul"\
-        "Ago"\
-        "Sep"\
-        "Okt"\
-        "Nov"\
-        "Des"\
-        ""]
-    ::msgcat::mcset sw MONTHS_FULL [list \
-        "Januari"\
-        "Februari"\
-        "Machi"\
-        "Aprili"\
-        "Mei"\
-        "Juni"\
-        "Julai"\
-        "Agosti"\
-        "Septemba"\
-        "Oktoba"\
-        "Novemba"\
-        "Desemba"\
-        ""]
-    ::msgcat::mcset sw BCE "KK"
-    ::msgcat::mcset sw CE "BK"
-}