Convert Alpha-Folds jobs to EnTK tasks.

[AymenFJA]

During our meeting with @JonathanEAsh today, we concluded that in this line

IMPRESS/mpnn_entk/run_mpnn_entk.py

Line 91 in c5e676e

t3.arguments = ['$HOME/jon_job.sh']

There will be 5 alpha-fold jobs that need to run concurrently. Thus, the next step is to migrate the jon_job.sh into 5 Task() within a single Stage to run concurrently.

Each alpha-fold task would take:

time: ~5 hours
cpus: 1
gpus: 1
memory: 32 GB

[AymenFJA]

This is done based on the latest commit from @JonathanEAsh. Thanks