type: re-export types

[chentsulin]

Merge types from messaging-api and bottender and re-export them again.

[codecov-commenter]

Codecov Report

Merging #804 into release/1.5 will increase coverage by 0.22%.
The diff coverage is 99.65%.

@@               Coverage Diff               @@
##           release/1.5     #804      +/-   ##
===============================================
+ Coverage        83.65%   83.88%   +0.22%     
===============================================
  Files              115      120       +5     
  Lines             6068     6154      +86     
  Branches          1491     1520      +29     
===============================================
+ Hits              5076     5162      +86     
  Misses             988      988              
  Partials             4        4              

Impacted Files	Coverage Δ
packages/bottender/src/messenger/MessengerBot.ts	100.00% <ø> (ø)
packages/bottender/src/slack/SlackEvent.ts	93.84% <ø> (ø)
packages/bottender/src/slack/routes.ts	100.00% <ø> (ø)
packages/bottender/src/telegram/TelegramContext.ts	58.78% <ø> (ø)
packages/bottender/src/telegram/TelegramEvent.ts	97.50% <ø> (ø)
packages/bottender/src/viber/ViberEvent.ts	100.00% <ø> (ø)
packages/bottender/src/whatsapp/WhatsappBot.ts	100.00% <ø> (ø)
...ckages/bottender/src/whatsapp/WhatsappConnector.ts	93.02% <ø> (ø)
packages/bottender/src/messenger/MessengerEvent.ts	99.29% <99.37%> (+0.19%)	⬆️
...ckages/bottender-facebook/src/FacebookConnector.ts	66.00% <100.00%> (+0.69%)	⬆️
... and 26 more

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