refactor(http): improved the way of how request metadata are applied

[JozefFlakus]

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[x] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the new behavior?

• @marblejs/http - changed request metadata header name from X-Testing-Request-Id to X-Request-Metadata-Id
• @marblejs/http - request metadata is applied inside an output effect instead of http.responseHandler.ts
• @marblejs/http - introduced environment config provider
• @marblejs/http - BREAKING - send/handleResponse function is evaluated lazily, which means that it will send the HTTP response only when the stream is subscribed
• @marblejs/http - changed MARBLE_TESTING_METADATA_ON env variable name to MARBLE_HTTP_REQUEST_METADATA

Does this PR introduce a breaking change?

[x] Yes
[ ] No

[codecov[bot]]

Codecov Report

Merging #354 (21d5f79) into next (46befd6) will decrease coverage by 0.83%. The diff coverage is 93.04%.

@@            Coverage Diff             @@
##             next     #354      +/-   ##
==========================================
- Coverage   94.91%   94.07%   -0.84%     
==========================================
  Files         135      159      +24     
  Lines        2242     3091     +849     
  Branches      301      355      +54     
==========================================
+ Hits         2128     2908     +780     
- Misses        110      179      +69     
  Partials        4        4              

Impacted Files	Coverage Δ
packages/core/src/logger/logger.interface.ts	100.00% <ø> (ø)
packages/core/src/operators/use/use.operator.ts	50.00% <ø> (-50.00%)	:arrow_down:
packages/http/src/error/http.error.effect.ts	100.00% <ø> (ø)
packages/http/src/http.interface.ts	100.00% <ø> (ø)
packages/http/src/index.ts	0.00% <0.00%> (ø)
packages/http/src/router/http.router.matcher.ts	100.00% <ø> (ø)
...messaging/src/transport/strategies/tcp.strategy.ts	0.00% <0.00%> (ø)
packages/middleware-cors/src/applyHeaders.ts	100.00% <ø> (ø)
packages/middleware-cors/src/checkOrigin.ts	100.00% <ø> (ø)
packages/middleware-cors/src/configureResponse.ts	100.00% <ø> (ø)
... and 163 more

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