Replace get-libwasm-version.py script

[gjermundgaraba]

We currently use a python script to find the correct libwasm version to send to the 08-wasm Dockerfile.

This is overkill and requires installing python dependencies, which is not necessary for such as a simple operation.

The best solution would be for the dockerfile itself to find the correct libwasm version to download, but the next best solution is to replace the python script with a minimal bash script.

If we solve it in the dockerfile, remove the usage of the script in Makefile and the build-wasm-simd-image-from-tag.yml file. Otherwise, replace the invocation of scripts/get-libwasm-version.py with a minimal bash script that does not require any dependencies and just returns the version in the same way as the python script.

[ArtGinn]

Could I handle this @gjermundgaraba ?

[gjermundgaraba]

Yes, that would be great @ArtGinn! I'll assign you