Revert "remove variables support (#30)"

[agubler]

This reverts commit b742419.

Type: feature

The following has been addressed in the PR:

• There is a related issue
• All code has been formatted with prettier
• Unit or Functional tests are included in the PR

Description:

Reverts the changes to dealing with variables for the time being as are not ready for it. Waiting on supporting changes from dojo/framework.

[codecov]

Codecov Report

Merging #33 into revert-removing-variables-support will not change coverage.
The diff coverage is 0%.

@@                       Coverage Diff                       @@
##           revert-removing-variables-support   #33   +/-   ##
===============================================================
  Coverage                                  0%    0%           
===============================================================
  Files                                      5     5           
  Lines                                    157   159    +2     
  Branches                                  20    20           
===============================================================
- Misses                                   157   159    +2

Impacted Files	Coverage Δ
src/webpack.config.ts	0% <0%> (ø)	⬆️

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