local backend: fix steps having logs form other steps

[6543]

problem

if steps where started concurrent, the stdout pipeline reader war overwritten and you randomly got the wrong command stream
from a step.

change

where we have possible race conditions, we now use thread save types
e.g. store the command struct and the output reader in sync.Map

also a lot of tests where added

coverage

before: 14.9%
now: 59.2%

go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/clone.go:34:		checkGitCloneCap				0.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/clone.go:40:		loadClone					75.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/clone.go:50:		setupClone					0.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/clone.go:65:		execClone					0.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/clone.go:121:		writeNetRC					0.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/clone.go:140:		downloadLatestGitPluginBinary	0.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/command.go:35:	execCommands				75.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/command.go:75:	checkShellExistence			100.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/command.go:80:	genCmdByShell				91.4%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/command.go:143:	probeShellIsPosix				100.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/const.go:38:		genNetRC					100.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/errors.go:39:		Error						100.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/errors.go:44:		Unwrap						0.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/errors.go:49:		Is							100.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:56:		New						100.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:63:		Name						0.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:67:		IsAvailable					60.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:77:		Flags						0.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:81:		Load						100.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:94:		SetupWorkflow				72.7%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:121:		StartStep						87.5%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:155:		WaitStep						83.3%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:183:		TailStep						66.7%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:193:		DestroyStep					90.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:211:		DestroyWorkflow				88.2%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:241:		getWorkflowState				85.7%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/local.go:255:		getStepState					80.0%
go.woodpecker-ci.org/woodpecker/v3/pipeline/backend/local/plugin.go:26:		execPlugin					83.3%

[qwerty287]

Seems fine, but not tested from my side.

[codecov]

Codecov Report

❌ Patch coverage is 60.33058% with 48 lines in your changes missing coverage. Please review.
✅ Project coverage is 20.18%. Comparing base (e11f110) to head (b7c05ae).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
pipeline/backend/local/local.go	66.66%	12 Missing and 7 partials ⚠️
pipeline/backend/local/command.go	57.57%	10 Missing and 4 partials ⚠️
pipeline/backend/local/clone.go	0.00%	9 Missing ⚠️
pipeline/backend/local/plugin.go	72.72%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5582      +/-   ##
==========================================
+ Coverage   19.79%   20.18%   +0.39%     
==========================================
  Files         419      421       +2     
  Lines       39796    39874      +78     
==========================================
+ Hits         7878     8049     +171     
+ Misses      31210    31095     -115     
- Partials      708      730      +22     

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