MAINT: update append_from function signature

[anish-mudaraddi]

previously append_from would work like this:

query.append_from("project", cloud_account="prod", "project_id", "project_name")

now it works like this

query.append_from("project", cloud_account="prod", props=["project_id", "project_name"])

which is more intuitive and fits python conventions

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.05%. Comparing base (943f21d) to head (a988bc7).
Report is 6 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #232   +/-   ##
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  Coverage   98.05%   98.05%           
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  Files         187      187           
  Lines        8258     8258           
  Branches      519      519           
=======================================
  Hits         8097     8097           
  Misses        135      135           
  Partials       26       26           

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[khalford]

LGTM