Stripe setup

[joeylouise]

Add payment-processor route and hbs file
Configure handlebars
Register inert and vision

relates #23 #25 #26 #27

[codecov-io]

Codecov Report

Merging #28 into staging will decrease coverage by 5%.
The diff coverage is 91.66%.

@@          Coverage Diff          @@
##           staging   #28   +/-   ##
=====================================
- Coverage      100%   95%   -5%     
=====================================
  Files            3     5    +2     
  Lines            9    20   +11     
=====================================
+ Hits             9    19   +10     
- Misses           0     1    +1

Impacted Files	Coverage Δ
src/routes/index.js	100% <ø> (ø)	⬆️
src/handlebars.js	100% <100%> (ø)
src/routes/payment-processor.js	100% <100%> (ø)
src/server.js	92.3% <87.5%> (-7.7%)	⬇️

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