Add a param to run/piped in Makefile for setting --log-encoding to run the piped with specific log format

[ffjlabo]

What this PR does / why we need it:
Add a param to run/piped in Makefile for setting --log-encoding to run the piped with a specific log format.
We can choose 3 formats

• https://github.com/pipe-cd/pipecd/blob/7b26b02d856f819a0670beba49190fa09e4380a4/pkg/cli/app.go#L94C1-L99C3

	a.rootCmd.PersistentFlags().StringVar(
		&a.telemetryFlags.LogEncoding,
		"log-encoding",
		a.telemetryFlags.LogEncoding,
		"The encoding type for logger [json|console|humanize].",
	)

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

• How are users affected by this change: no
• Is this breaking change: no
• How to migrate (if breaking change): no

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (8e302a8) 31.04% compared to head (dedf3c5) 31.03%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4762      +/-   ##
==========================================
- Coverage   31.04%   31.03%   -0.01%     
==========================================
  Files         225      225              
  Lines       26257    26257              
==========================================
- Hits         8152     8150       -2     
- Misses      17455    17457       +2     
  Partials      650      650              

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[khanhtc1202]

Nice catch 👍

[t-kikuc]

Nice!!