Remove memory watch and implement reload with normal watch

[agubler]

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:

Removes "memory" watch which loaded bundles in memory and was not compatible with build time render. Changes the "file" watch to use the webpack-hot-middleware and support automatically reloading of the browser when used with --serve

[codecov]

Codecov Report

Merging #224 into master will decrease coverage by 1.03%.
The diff coverage is 83.33%.

@@            Coverage Diff            @@
##           master    #224      +/-   ##
=========================================
- Coverage   53.64%   52.6%   -1.04%     
=========================================
  Files          10      10              
  Lines         604     595       -9     
  Branches      147     144       -3     
=========================================
- Hits          324     313      -11     
- Misses        280     282       +2

Impacted Files	Coverage Δ
src/dist.config.ts	33.33% <0%> (ø)	⬆️
src/dev.config.ts	21.15% <0%> (ø)	⬆️
src/main.ts	90.58% <90.9%> (-1.6%)	⬇️

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[mwistrand]

Nice!