Adds dynamic parsing extension configuration from meta file

[joelgallant]

This dramatically simplifies the process of using 3rd party extensions, and brings more parity between the Node.js API and CLI. See #20.

[cypress[bot]]

---

Test summary

1 • 0 • 0 • 0

---

Run details

Project	App Config
Status	Passed
Commit	ccc54d20ce
Started	Jan 3, 2021 2:33 AM
Ended	Jan 3, 2021 2:34 AM
Duration	00:05 💡
OS	Linux Ubuntu - 18.04
Browser	Electron 87

View run in Cypress Dashboard ➡️

---

This comment has been generated by cypress-bot as a result of this project's GitHub integration settings. You can manage this integration in this project's settings in the Cypress Dashboard

[codecov-io]

Codecov Report

Merging #85 (ccc54d2) into master (77885af) will increase coverage by 0.16%. The diff coverage is 81.81%.

@@            Coverage Diff             @@
##           master      #85      +/-   ##
==========================================
+ Coverage   69.44%   69.60%   +0.16%     
==========================================
  Files          21       21              
  Lines        1440     1461      +21     
  Branches      291      295       +4     
==========================================
+ Hits         1000     1017      +17     
- Misses        245      247       +2     
- Partials      195      197       +2     

Impacted Files	Coverage Δ
app-config/src/meta.ts	78.43% <76.47%> (-1.57%)	:arrow_down:
app-config/src/config.ts	82.81% <100.00%> (+1.45%)	:arrow_up:

---

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 77885af...ccc54d2. Read the comment docs.