DOTCOM-3583: convert base files to typescript

[lucasassisrosa]

• [ ] resources (wip, Balance)
• [x] Error
• [x] autoPagination
• [x] makeRequest
• [x] multipart
• [x] telnyx
• [x] TelnyxMethod
• [x] TelnyxResource
• [x] utils
• [x] Webhooks

Manual testing

• run npm run lint
• run npm run build
• check types in types folder
• check output in dist folder
• check README instructions on typescript

Notes

keeping changes from previous #177 here to keep consistency as v2.0.0 branch will be serving the published NODE SDK alpha versions before it's approved by users and merged to main

[lucasassisrosa]

in favor of #181