[Timepix] Throw pasha at it

Description

Uses pasha to exploit the embarrassing parallelism in the existing Timepix notebook. The code was already structured in a way that it was essentially just writing psh.map in front of it.

Also changes the default output source name back to being symmetric to input after fixing !976 (merged).

How Has This Been Tested?

run = 307
in_folder = '/gpfs/exfel/exp/SQS/202430/p900421/raw'

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist:

• My code follows the code style of this project.

Reviewers

@ahmedk @bjoerns