Improve documentation of debugging pipelines.

[diekhans]

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Users moving to Toil will often have no experience debugging in a cloud environment. There needs to be a chapter on how a user approaches debugging. print and pydb don't exactly work.

┆Issue is synchronized with this Jira Story ┆Epic: Improve debugging experience ┆Issue Number: TOIL-323

[hannes-ucsc]

See also #677 and #662.

[unito-bot]

➤ Lon Blauvelt commented:

Specifically include a tutorial on how to use pycharm to debug on WDL and CWL.