0.50.0 release

New features:

- templates: jobs: fvp-aemva: enable arm v9.4
- fvp: check the sha256 sums of the models
- argparse: overlay: take two arguments, url and extract path
- argparse: modules: take two arguments, url and extract path
- test: unit: update the modules variable to match an array
- test: unit: test_device: change path where modules should be extracted
- test: unit: test_device: change path where overlays should be extracted
- test: unit: test_main: almost_real_run verify modules
- test: unit: test_main: almost_real_run verify overlay
- share: fvp: Makefile: update to aemva release 11.23_9

Bug fixes:

Documentation updates:

Container images: