Test appimage of ld-decode tools

Test appimage of ld-decode tools built on Ubuntu 20.04 LTS

Runs ld-analyse by default, launch with tool name to run the specific tool instead.
use ./dd86_decode_tools-82c5632-x86_64.AppImage --lsexec to show tools that can be ran.

VHS-decode tools windows build prerelease 7

tools_prerelease_7

Merge branch 'master' of https://github.com/happycube/ld-decode into …