Dynamic linking on WebAssembly involves preloading .so libraries
during startup of application. Normally, those plugin preload
lists are generating manually by user, which can be tedious.
Add a bash script which demonstrates how to call python
programs to generate preload lists.
Pick-to: 6.9
Change-Id: I0a9869ad0d26606f8b33af2c38248cec3088dd0d
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>