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/opt0.4/pkgIndex.tcl

@@ -1,12 +0,0 @@
-# Tcl package index file, version 1.1
-# This file is generated by the "pkg_mkIndex -direct" command
-# and sourced either when an application starts up or
-# by a "package unknown" script.  It invokes the
-# "package ifneeded" command to set up package-related
-# information so that packages will be loaded automatically
-# in response to "package require" commands.  When this
-# script is sourced, the variable $dir must contain the
-# full path name of this file's directory.
-
-if {![package vsatisfies [package provide Tcl] 8.5-]} {return}
-package ifneeded opt 0.4.9 [list source -encoding utf-8 [file join $dir optparse.tcl]]