feat: email connector (#157)

* new: add email connection shell

* new: add secure & insecure smtp

* new: read email

* new: more email logic

* feat: automatically reply

* feat: poc email response

* feat: introduce email concurrency and reply functionality

* feat: html replies

* refactor: make email.go legible

* feat: add email connection docs

* fix: startup error handling and dial error

go.sum

@@ -1,3 +1,7 @@
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@@ -37,6 +41,19 @@ github.com/dlclark/regexp2 v1.11.5 h1:Q/sSnsKerHeCkc/jSTNq1oCm7KiVgUMZRDUoRu0JQZ
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+github.com/emersion/go-imap/v2 v2.0.0-beta.5 h1:H3858DNmBuXyMK1++YrQIRdpKE1MwBc+ywBtg3n+0wA=
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+github.com/emersion/go-message v0.15.0/go.mod h1:wQUEfE+38+7EW8p8aZ96ptg6bAb1iwdgej19uXASlE4=
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+github.com/emersion/go-smtp v0.22.0 h1:/d3HWxkZZ4riB+0kzfoODh9X+xyCrLEezMnAAa1LEMU=
+github.com/emersion/go-smtp v0.22.0/go.mod h1:ZtRRkbTyp2XTHCA+BmyTFTrj8xY4I+b4McvHxCU2gsQ=
+github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594/go.mod h1:aqO8z8wPrjkscevZJFVE1wXJrLpC5LtJG7fqLOsPb2U=
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@@ -83,6 +100,8 @@ github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaS
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