Refactor wrapped scan plans so they are flatter

[oliwenmandiamond]

This change aims to make the scan syntax much more user friendly. Some examples are show below:

Old syntax

from dodal.plans import wrapped as dpw
>>> RE(dpw.list_grid_scan([], [(x, [1, 5, 10, 50])]))

>>> RE(dpw.step_grid_scan([], [(x, [1, 10, 1]), (y, [1, 5, 1])]))

New syntax

>>> RE(dpw.list_grid_scan([], [x, [1, 5, 10, 50]]))

>>> RE(dpw.step_grid_scan([], [x, 1, 10, 1, y, 1, 5, 1]))

# Blueapi client example
>>> bc.plans.step_grid_scan([], [x, 1, 10, 1, y, 1, 5, 1])

When BlueAPI supports *args, we can simplifier this even further by removing another set of brackets:

>>> RE(dpw.step_grid_scan([], x, 1, 10, 1, y, 1, 5, 1))

or BlueAPI client equivalent

>>> bc.plans.step_grid_scan([], x, 1, 10, 1, y, 1, 5, 1)

Instructions to reviewer on how to test:

1. Check implementation and logic is correct
2. Test coverage is sufficient.

Checks for reviewer

• Would the PR title make sense to a scientist on a set of release notes
• If a new device has been added does it follow the standards
• If changing the API for a pre-existing device, ensure that any beamlines using this device have updated their Bluesky plans accordingly
• Have the connection tests for the relevant beamline(s) been run via dodal connect ${BEAMLINE}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.11%. Comparing base (0649293) to head (2c4587a).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2050      +/-   ##
==========================================
- Coverage   99.11%   99.11%   -0.01%     
==========================================
  Files         327      327              
  Lines       12812    12800      -12     
==========================================
- Hits        12699    12687      -12     
  Misses        113      113              

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