Guided setup time of call field

[duckbytes]

Adds a field to the guided setup for changing the time of call.

Disables the SAVE TO DASHBOARD button if the time is invalid or if it is empty.

Defaults to the time that the guided setup is opened and confirms with the user if the time is changed and DISCARD button pressed.

[codecov-commenter]

Codecov Report

Merging #131 (f0b9373) into master (de89df3) will increase coverage by 0.02%. The diff coverage is 83.87%.

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@@            Coverage Diff             @@
##           master     #131      +/-   ##
==========================================
+ Coverage   58.92%   58.94%   +0.02%     
==========================================
  Files         302      302              
  Lines        9876     9895      +19     
  Branches     2499     2503       +4     
==========================================
+ Hits         5819     5833      +14     
- Misses       3694     3698       +4     
- Partials      363      364       +1     

Impacted Files	Coverage Δ
src/scenes/GuidedSetup/GuidedSetup.js	84.02% <70.58%> (-2.02%)	:arrow_down:
src/components/ContactForm.tsx	100.00% <100.00%> (ø)
...rc/scenes/GuidedSetup/components/CallerDetails.tsx	80.00% <100.00%> (ø)

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[duckbytes]

@Joetooker95 let me know if you're happy with how this looks.

[duckbytes]

Going to merge this for now with an aim to push out an update before training on Friday.

We can always come back to it and change later it based on user feedback.