Inbound Email parsing

[coderberry]

Type of PR

• [x] feature
• [ ] enhancement
• [ ] bug fix
• [ ] other

Description

Allow capture of inbound emails to CodeFund team members from either advertisers or publishers and stores emails.

This is phase 1 of migrating out of Pipedrive into CF for account management.

Note: For this to work on stage/prod, we must set the ENV var RAILS_INBOUND_EMAIL_PASSWORD and then run rails misc:generate_inbound_destination_url. This URL is then used by SendGrid for the ingress email settings.

Checklist

• [x] My code follows the style guidelines of this project & the tests are passing
• [x] I have performed a self-review of my own code
• [x] I have requested a review from another developer(s)

Screenshots

[codecov[bot]]

Codecov Report

Merging #1251 into master will increase coverage by 0.26%. The diff coverage is 58.94%.

@@            Coverage Diff             @@
##           master    #1251      +/-   ##
==========================================
+ Coverage   34.52%   34.78%   +0.26%     
==========================================
  Files         328      335       +7     
  Lines        7719     7810      +91     
==========================================
+ Hits         2665     2717      +52     
- Misses       5054     5093      +39     

Impacted Files	Coverage Δ
app/controllers/user_emails_controller.rb	0.00% <0.00%> (ø)
app/controllers/users_controller.rb	0.00% <0.00%> (ø)
app/helpers/users_helper.rb	50.00% <ø> (ø)
app/mailboxes/incoming_mailbox.rb	61.11% <61.11%> (ø)
app/components/back_link_component.rb	100.00% <100.00%> (ø)
app/components/list_group_component.rb	100.00% <100.00%> (ø)
app/components/page/header_component.rb	100.00% <100.00%> (ø)
app/helpers/user_emails_helper.rb	100.00% <100.00%> (ø)
app/mailboxes/application_mailbox.rb	100.00% <100.00%> (ø)
app/models/authorized_user.rb	100.00% <100.00%> (ø)
... and 10 more