Allow suite-level configuration of steps and hooks

[vearutop]

Description

During discussion it turned out step/hooks instrumentation happens for every scenario.

Motivation & context

Setting up steps/hooks for each scenario may be unnecessary overhead in most cases, as step/hooks handlers are usually identical for every scenario. Improvement idea is to create "global" setup in suite initializer and use it as a base for each scenario.

So that you could use

TestSuiteInitializer: func(suiteContext *godog.TestSuiteContext) {
	local.RegisterSteps(suiteContext.ScenarioContext())
},

instead of or additionally to

ScenarioInitializer: func(s *godog.ScenarioContext) {
	local.RegisterSteps(s)
},

Also, to simplify debugging, this PR runs scenario in the same goroutine when concurrency is disabled. This allows preserving original stack.

Type of change

• New feature (non-breaking change which adds new behaviour)

Note to other contributors

No note.

Update required of cucumber.io/docs

No update.

Checklist:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• I have added tests to cover my changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added an entry to the "Unreleased" section of the CHANGELOG, linking to this pull request.

[codecov]

Codecov Report

Merging #453 (ee85501) into main (a6fef3f) will increase coverage by 0.15%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #453      +/-   ##
==========================================
+ Coverage   81.31%   81.47%   +0.15%     
==========================================
  Files          27       27              
  Lines        2178     2186       +8     
==========================================
+ Hits         1771     1781      +10     
+ Misses        313      312       -1     
+ Partials       94       93       -1     

Impacted Files	Coverage Δ
run.go	76.47% <100.00%> (+2.32%)	⬆️
test_context.go	77.19% <100.00%> (+0.82%)	⬆️

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