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/nn.msg

@@ -1,52 +0,0 @@
-# created by tools/loadICU.tcl -- do not edit
-namespace eval ::tcl::clock {
-    ::msgcat::mcset nn DAYS_OF_WEEK_ABBREV [list \
-        "su"\
-        "m\u00e5"\
-        "ty"\
-        "on"\
-        "to"\
-        "fr"\
-        "lau"]
-    ::msgcat::mcset nn DAYS_OF_WEEK_FULL [list \
-        "sundag"\
-        "m\u00e5ndag"\
-        "tysdag"\
-        "onsdag"\
-        "torsdag"\
-        "fredag"\
-        "laurdag"]
-    ::msgcat::mcset nn MONTHS_ABBREV [list \
-        "jan"\
-        "feb"\
-        "mar"\
-        "apr"\
-        "mai"\
-        "jun"\
-        "jul"\
-        "aug"\
-        "sep"\
-        "okt"\
-        "nov"\
-        "des"\
-        ""]
-    ::msgcat::mcset nn MONTHS_FULL [list \
-        "januar"\
-        "februar"\
-        "mars"\
-        "april"\
-        "mai"\
-        "juni"\
-        "juli"\
-        "august"\
-        "september"\
-        "oktober"\
-        "november"\
-        "desember"\
-        ""]
-    ::msgcat::mcset nn BCE "f.Kr."
-    ::msgcat::mcset nn CE "e.Kr."
-    ::msgcat::mcset nn DATE_FORMAT "%e. %B %Y"
-    ::msgcat::mcset nn TIME_FORMAT "%H:%M:%S"
-    ::msgcat::mcset nn DATE_TIME_FORMAT "%e. %B %Y %H:%M:%S %z"
-}