Draft: support slot parsing inside dict and lists of dict or strings

[mchugh19]

What does this PR do?

Adds support for parsing slots inside of dictionaries and dicts and strings inside of lists.
This enables slot support for subkeys

What issues does this PR fix or reference?

#51798
#50596

Previous Behavior

As mentioned in linked issues, slots were not parsed in subkeys of state files

The following states displays the slot text itself

slot test:
  file.managed:
    - name: /tmp/thing
    - source: salt://slot.jinja
    - template: jinja
    - context:
        custom_var: __slot__:salt:cmd.run('echo password')

test module stuff:
  module.run:
    - test.arg:
      - message: __slot__:salt:cmd.run('echo blah')

scheduled_slot:
  schedule.present:
    - function: test.arg
    - job_args:
        - __slot__:salt:cmd.run('echo "blah"')
    - cron: '* * * * *'

scheduled_slot2:
  schedule.present:
    - function: test.arg
    - job_kwargs:
        - message: __slot__:salt:cmd.run('echo "blah"')
    - cron: '* * * * *'

New Behavior

Previously mentioned state examples now show slot results

Tests written?

Yes

Commits signed with GPG?

No

@DmitryKuzmenko

[DmitryKuzmenko]

I'm okay with this code.

[DmitryKuzmenko]

@thatch45 could you please take a look at this?

[mchugh19]

Tests added

[thatch45]

For the record, this is fantastic and I wanted to get it in when I added slots but I just did not have the time. Is there anything blocking merging this?

[mchugh19]

@thatch45 As far as I know it's all set. There's also #52187 you might want to review as well.