[FSTORE-1454] Unify variable_api and project_api (#219) #46

Job	Run time
Lint and Stylecheck	7s
Unit Tests (Pandas 1.x)	2m 2s
Unit Tests (No Optional Dependencies)	2m 15s
Unit Tests (Local TZ)	2m 54s
Unit Tests (3.8)	2m 41s
Unit Tests (3.9)	2m 43s
Unit Tests (3.10)	2m 39s
Unit Tests (Windows)	8m 34s
Unit Tests (Typechecked)	2m 36s
Unit Tests (Windows) (Local TZ)	9m 14s
	35m 45s

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