[DOC] Update documents for Input through file and pipe

[mao3267]

Tracking issue

Related to flyteorg/flyte#5365

Why are the changes needed?

We want to update the docs for pyflyte when input through file and pipe.

What changes were proposed in this pull request?

1. Added examples for pyflyte run command, including the original method and the new feature --inputs-file.

How was this patch tested?

No tests needed.

Check all the applicable boxes

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

Related PRs

#2552

Docs link

https://docs.flyte.org/en/latest/api/flytekit/design/clis.html#what-is-pyflyte-run

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 83.55%. Comparing base (15d82ef) to head (b0979a5).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2691      +/-   ##
==========================================
+ Coverage   78.61%   83.55%   +4.93%     
==========================================
  Files         193        3     -190     
  Lines       19691      152   -19539     
  Branches     4101        0    -4101     
==========================================
- Hits        15481      127   -15354     
+ Misses       3492       25    -3467     
+ Partials      718        0     -718     

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