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/sk.msg

@@ -1,52 +0,0 @@
-# created by tools/loadICU.tcl -- do not edit
-namespace eval ::tcl::clock {
-    ::msgcat::mcset sk DAYS_OF_WEEK_ABBREV [list \
-        "Ne"\
-        "Po"\
-        "Ut"\
-        "St"\
-        "\u0160t"\
-        "Pa"\
-        "So"]
-    ::msgcat::mcset sk DAYS_OF_WEEK_FULL [list \
-        "Nede\u013ee"\
-        "Pondelok"\
-        "Utorok"\
-        "Streda"\
-        "\u0160tvrtok"\
-        "Piatok"\
-        "Sobota"]
-    ::msgcat::mcset sk MONTHS_ABBREV [list \
-        "jan"\
-        "feb"\
-        "mar"\
-        "apr"\
-        "m\u00e1j"\
-        "j\u00fan"\
-        "j\u00fal"\
-        "aug"\
-        "sep"\
-        "okt"\
-        "nov"\
-        "dec"\
-        ""]
-    ::msgcat::mcset sk MONTHS_FULL [list \
-        "janu\u00e1r"\
-        "febru\u00e1r"\
-        "marec"\
-        "apr\u00edl"\
-        "m\u00e1j"\
-        "j\u00fan"\
-        "j\u00fal"\
-        "august"\
-        "september"\
-        "okt\u00f3ber"\
-        "november"\
-        "december"\
-        ""]
-    ::msgcat::mcset sk BCE "pred n.l."
-    ::msgcat::mcset sk CE "n.l."
-    ::msgcat::mcset sk DATE_FORMAT "%e.%m.%Y"
-    ::msgcat::mcset sk TIME_FORMAT "%k:%M:%S"
-    ::msgcat::mcset sk DATE_TIME_FORMAT "%e.%m.%Y %k:%M:%S %z"
-}