Add configurable timeouts to http server

[yihuang]

Description

Closes: #963

not tested yet.

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[codecov]

Codecov Report

Merging #979 (d2dde0a) into main (67fba0a) will decrease coverage by 0.05%.
The diff coverage is 40.62%.

@@            Coverage Diff             @@
##             main     #979      +/-   ##
==========================================
- Coverage   59.09%   59.03%   -0.06%     
==========================================
  Files          79       79              
  Lines        6508     6518      +10     
==========================================
+ Hits         3846     3848       +2     
- Misses       2444     2452       +8     
  Partials      218      218              

Impacted Files	Coverage Δ
server/config/config.go	20.98% <40.62%> (-0.07%)	⬇️

[crypto-facs]

LGTM!

[fedekunze]

Minor comment, I'd also add a test so that we ensure that the toml is correctly parsed to the config