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/gv.msg

@@ -1,47 +0,0 @@
-# created by tools/loadICU.tcl -- do not edit
-namespace eval ::tcl::clock {
-    ::msgcat::mcset gv DAYS_OF_WEEK_ABBREV [list \
-        "Jed"\
-        "Jel"\
-        "Jem"\
-        "Jerc"\
-        "Jerd"\
-        "Jeh"\
-        "Jes"]
-    ::msgcat::mcset gv DAYS_OF_WEEK_FULL [list \
-        "Jedoonee"\
-        "Jelhein"\
-        "Jemayrt"\
-        "Jercean"\
-        "Jerdein"\
-        "Jeheiney"\
-        "Jesarn"]
-    ::msgcat::mcset gv MONTHS_ABBREV [list \
-        "J-guer"\
-        "T-arree"\
-        "Mayrnt"\
-        "Avrril"\
-        "Boaldyn"\
-        "M-souree"\
-        "J-souree"\
-        "Luanistyn"\
-        "M-fouyir"\
-        "J-fouyir"\
-        "M.Houney"\
-        "M.Nollick"\
-        ""]
-    ::msgcat::mcset gv MONTHS_FULL [list \
-        "Jerrey-geuree"\
-        "Toshiaght-arree"\
-        "Mayrnt"\
-        "Averil"\
-        "Boaldyn"\
-        "Mean-souree"\
-        "Jerrey-souree"\
-        "Luanistyn"\
-        "Mean-fouyir"\
-        "Jerrey-fouyir"\
-        "Mee Houney"\
-        "Mee ny Nollick"\
-        ""]
-}