Added tsx to list of linted file extensions

[devpaul]

Type: bug

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
• schema.json has been updated appopriately

Description:

Updated the webpack config in base.config to include tsx as a file extension for the tslint-loader. Tested manually.

Resolves #351

[codecov]

Codecov Report

Merging #374 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #374   +/-   ##
=======================================
  Coverage   48.92%   48.92%           
=======================================
  Files          10       10           
  Lines         695      695           
  Branches      199      199           
=======================================
  Hits          340      340           
  Misses        355      355

Impacted Files	Coverage Δ
src/base.config.ts	19.65% <ø> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 86b6dfe...ed41011. Read the comment docs.