Add request id to headers if exists

[berniechiu]

Description

• This should add enhancement for Automatically add request_id tag #891, which allows Sentry server to auto parse request id from default Rails stack
• Follow what https://github.com/skylightio/skylight-ruby/blob/3e742ea00f41b3c57c3f0305ed82c794b396d7ab/lib/skylight/middleware.rb#L124 might retrieve from the ID from Rails Middleware

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (v3-1-stable@b66cc99). Click here to learn what that means.
The diff coverage is n/a.

@@              Coverage Diff               @@
##             v3-1-stable    #1033   +/-   ##
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  Coverage               ?   98.15%           
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  Files                  ?       56           
  Lines                  ?     2443           
  Branches               ?        0           
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  Hits                   ?     2398           
  Misses                 ?       45           
  Partials               ?        0           

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[st0012]

thanks for the PR 👍 just added some small suggestions
also, can you rebase this PR (or cherry-picking the commits) against v3-1-stable instead of master?
sorry I didn't make it clear but we currently only accept contributions to the 3.1.x versions before the v4 is finished. (I have updated the readme & PR template for this though)

[berniechiu]

thanks for the PR 👍 just added some small suggestions
also, can you rebase this PR (or cherry-picking the commits) against v3-1-stable instead of master?
sorry I didn't make it clear but we currently only accept contributions to the 3.1.x versions before the v4 is finished. (I have updated the readme & PR template for this though)

No prob~~ done~

[st0012]

@berniechiu thanks for the work 👍