Replace mpsc::{Sender,Receiver} by VecDeque

[soywod]

Fixes #254.

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This change is 

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 93.18182% with 9 lines in your changes missing coverage. Please review.

Project coverage is 85.5%. Comparing base (a7d22f0) to head (2beff59). Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/parse.rs	93.9%	5 Missing :warning:
src/client.rs	87.8%	4 Missing :warning:

Additional details and impacted files

Files with missing lines	Coverage Δ
src/extensions/list_status.rs	87.8% <100.0%> (ø)
src/extensions/metadata.rs	92.6% <100.0%> (ø)
src/types/acls.rs	98.4% <100.0%> (ø)
src/types/capabilities.rs	55.8% <100.0%> (ø)
src/types/fetch.rs	65.6% <100.0%> (ø)
src/types/name.rs	70.1% <100.0%> (ø)
src/types/quota.rs	93.7% <100.0%> (ø)
src/client.rs	92.7% <87.8%> (-0.1%)	:arrow_down:
src/parse.rs	89.9% <93.9%> (+0.4%)	:arrow_up:

[bogthe]

Hi @soywod I really like this PR and it also looks super close to being finished. Is there anyway I can help get this merged?

[soywod]

I forgot about this PR as it did not fix my initial issue. I can take a look back during this week and see if I can complete it.

[soywod]

Sorry for the very long delay. The PR is ready for another review!