Add Thumbor redis storage

[guilhermef]

This storage should be used when using Queued detector on Thumbor

[RaphaelVRossi]

Hey @guilhermef , maybe we can use Redis client from remotecv.utils to reuse the same code. What do you think?!

[guilhermef]

Hey @RaphaelVRossi, we're using an async Redis client for the storage. Maybe we can the async one on both.

[guilhermef]

@RaphaelVRossi there's also another issue.
The storage is meant to be used as part of Thumbor, instead of remotecv, so the whole config parameters are coming from the context object.

[coveralls]

Pull Request Test Coverage Report for Build 3355783961

• 0 of 31 (100.0%) changed or added relevant lines in 1 file are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+2.4%) to 62.243%

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Files with Coverage Reduction	New Missed Lines	%
remotecv/image.py	2	86.96%

Totals
Change from base Build 2873778314:	2.4%
Covered Lines:	274
Relevant Lines:	446

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 3379931166

• 31 of 31 (100.0%) changed or added relevant lines in 1 file are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+1.8%) to 61.581%

---

Files with Coverage Reduction	New Missed Lines	%
remotecv/image.py	2	86.96%

Totals
Change from base Build 2873778314:	1.8%
Covered Lines:	272
Relevant Lines:	443

---

💛 - Coveralls

[scorphus]

Looking good. Please consider my suggestions/nits below.

[codeclimate]

Code Climate has analyzed commit b255ba5 and detected 0 issues on this pull request.

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[guilhermef]

Thanks @scorphus

[RaphaelVRossi]

LGTM! Thanks @guilhermef 🥳