feat(zap): silent zap logging

[IvanMaidurov]

Logger will write to output only if error occurred during request

Closes #311

[IvanMaidurov]

easy test with no parallel requests but with parallel writings:

name              old time/op    new time/op    delta
Log/spam_test-10     2.28s ± 1%     0.45s ±77%   -80.29%  (p=0.000 n=10+10)

name              old alloc/op   new alloc/op   delta
Log/spam_test-10    95.0MB ± 1%   216.7MB ± 0%  +128.20%  (p=0.000 n=9+10)

name              old allocs/op  new allocs/op  delta
Log/spam_test-10     1.33M ± 1%     1.39M ± 1%    +4.43%  (p=0.000 n=10+10)

100 parallel requests, each. with 300 parallel writes:

name              old time/op    new time/op    delta
Log/spam_test-10     2.02s ± 1%     2.13s ± 1%     +5.36%  (p=0.000 n=10+10)

name              old alloc/op   new alloc/op   delta
Log/spam_test-10     198MB ± 1%   11409MB ± 0%  +5657.54%  (p=0.000 n=10+9)

name              old allocs/op  new allocs/op  delta
Log/spam_test-10     3.20M ± 0%     6.07M ± 0%    +89.84%  (p=0.000 n=10+10)

[github-actions]

Package	Line Rate	Health
flamingo.me/flamingo/v3/core/auth	13%	❌
flamingo.me/flamingo/v3/core/auth/fake	50%	➖
flamingo.me/flamingo/v3/core/auth/http	40%	❌
flamingo.me/flamingo/v3/core/auth/oauth	48%	❌
flamingo.me/flamingo/v3/core/cache	54%	➖
flamingo.me/flamingo/v3/core/gotemplate	87%	✔
flamingo.me/flamingo/v3/core/healthcheck/interfaces/controllers	76%	✔
flamingo.me/flamingo/v3/core/healthcheck	64%	➖
flamingo.me/flamingo/v3/core/internalauth/application	100%	✔
flamingo.me/flamingo/v3/core/internalauth	100%	✔
flamingo.me/flamingo/v3/core/locale/application	87%	✔
flamingo.me/flamingo/v3/core/locale/domain	75%	✔
flamingo.me/flamingo/v3/core/locale/interfaces/controllers	100%	✔
flamingo.me/flamingo/v3/core/locale/interfaces/templatefunctions	92%	✔
flamingo.me/flamingo/v3/core/locale	59%	➖
flamingo.me/flamingo/v3/core/oauth/application	4%	❌
flamingo.me/flamingo/v3/core/oauth/domain	62%	➖
flamingo.me/flamingo/v3/core/oauth	55%	➖
flamingo.me/flamingo/v3/core/requestlogger	100%	✔
flamingo.me/flamingo/v3/core/requesttask	10%	❌
flamingo.me/flamingo/v3/core/robotstxt	50%	➖
flamingo.me/flamingo/v3/core/runtime	77%	✔
flamingo.me/flamingo/v3/core/security/application/role	95%	✔
flamingo.me/flamingo/v3/core/security/application	98%	✔
flamingo.me/flamingo/v3/core/security/application/voter	100%	✔
flamingo.me/flamingo/v3/core/security/interface/controller	100%	✔
flamingo.me/flamingo/v3/core/security/interface/middleware	72%	➖
flamingo.me/flamingo/v3/core/security	59%	➖
flamingo.me/flamingo/v3/core/zap	43%	❌
flamingo.me/flamingo/v3/framework/cmd	12%	❌
flamingo.me/flamingo/v3/framework/config	49%	❌
flamingo.me/flamingo/v3/framework/flamingo	30%	❌
flamingo.me/flamingo/v3/framework	29%	❌
flamingo.me/flamingo/v3/framework/opencensus	88%	✔
flamingo.me/flamingo/v3/framework/prefixrouter	43%	❌
flamingo.me/flamingo/v3/framework/systemendpoint	27%	❌
flamingo.me/flamingo/v3/framework/testutil	0%	❌
flamingo.me/flamingo/v3/framework/web	49%	❌
Summary	49% (3278 / 6678)	❌