Rename literal offloading flags and enable offloading in local config

[eapolinario]

Tracking issue

Linking to RFC: #5103

Why are the changes needed?

All the other flags use the format proposed in this PR.

What changes were proposed in this pull request?

Rename pflags for the new literal offloading feature. Also, enable it by default in the default dev config.

How was this patch tested?

A lot of local testing in combination with flyteorg/flytekit#2685.

Setup process

Screenshots

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

Docs link

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

@@            Coverage Diff            @@
##             master    #5754   +/-   ##
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  Coverage          ?   36.29%           
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  Files             ?     1305           
  Lines             ?   109991           
  Branches          ?        0           
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  Hits              ?    39923           
  Misses            ?    65913           
  Partials          ?     4155           

Flag	Coverage Δ
unittests-datacatalog	51.37% <ø> (?)
unittests-flyteadmin	55.62% <ø> (?)
unittests-flytecopilot	12.17% <ø> (?)
unittests-flytectl	62.21% <ø> (?)
unittests-flyteidl	7.12% <ø> (?)
unittests-flyteplugins	53.35% <ø> (?)
unittests-flytepropeller	41.87% <100.00%> (?)
unittests-flytestdlib	55.19% <ø> (?)

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