feat: Autoload Twilio::REST and Twilio::HTTP

[gmcgibbon]

Currently Twilio::REST and Twilio::HTTP are loaded with file globs. This works great, but it is slow. Especially for Twilio::REST which has lots of files. For applications using this gem, bundler will require "twilio-ruby" and load the entire gem at once.

Ruby's autoload feature can help with this. Autoload defers loading modules until they are actually needed/referenced. By autoloading Twilio::REST and Twilio::HTTP, the require-time of this library is reduced from ~400ms to ~25ms. You can verify this by wrapping the require in your spec helper with a benchmark block:

require "benchmark"
ms = 1000 * Benchmark.realtime do
  require 'twilio-ruby'
end
puts "Require took #{ms}ms"

This is what the gem require currently looks like in our application, with the majority of time taken by requiring Twilio::REST:

After this patch, it did not show up in our profiles.

Checklist

• I acknowledge that all my contributions will be made under the project's license
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the Contribution Guidelines and my PR follows them
• I have titled the PR appropriately
• I have updated my branch with the main branch
• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary documentation about the functionality in the appropriate .md file
• I have added inline documentation to the code I modified

If you have questions, please file a support ticket, or create a GitHub Issue in this repository.

[thinkingserious]

Thank you!! Please remove the unnecessary glob.

[eshanholtz]

LGTM! Thank you for the contribution!