Enable gofmt linter

[ffjlabo]

What this PR does:

as title.

The target files are those below.

% gofmt -s -l ./                                                                            
pkg/app/ops/handler/handler_mock.go
pkg/app/piped/executor/analysis/mannwhitney/udist.go
pkg/app/piped/executor/cloudrun/cloudrun.go
pkg/app/piped/platformprovider/cloudrun/cloudrun.go
pkg/app/pipedv1/livestatereporter/livestatereporter_test.go
pkg/insight/insightstore/deployment_store_test.go
pkg/insight/provider_test.go
pkg/log/log_test.go
tool/actions-gh-release/comment_test.go
tool/actions-gh-release/github.go
tool/actions-gh-release/release_test.go
tool/actions-plan-preview/github.go

Every fix doesn't have any logic changes.

Why we need it:

We can detect some patterns.

• The codes that are not formatted
• The codes that have redundant type expressions like those below

	TypeConditions = map[string]struct{}{
-		"Active":              struct{}{},
-		"Ready":               struct{}{},
-		"ConfigurationsReady": struct{}{},
-		"RoutesReady":         struct{}{},
-		"ContainerHealthy":    struct{}{},
-		"ResourcesAvailable":  struct{}{},
-	}
+	TypeConditions = map[string]struct{}{
+		"Active":              {},
+		"Ready":               {},
+		"ConfigurationsReady"  {},
+		"RoutesReady":         {},
+		"ContainerHealthy":    {},
+		"ResourcesAvailable":  {},
+	}

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

• How are users affected by this change:
• Is this breaking change:
• How to migrate (if breaking change):

[codecov]

Codecov Report

Attention: Patch coverage is 11.11111% with 8 lines in your changes missing coverage. Please review.

Project coverage is 26.65%. Comparing base (424894c) to head (f43e354).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/app/piped/executor/cloudrun/cloudrun.go	0.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5630      +/-   ##
==========================================
+ Coverage   26.58%   26.65%   +0.07%     
==========================================
  Files         477      477              
  Lines       50657    50740      +83     
==========================================
+ Hits        13465    13526      +61     
- Misses      36134    36147      +13     
- Partials     1058     1067       +9     

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[ffjlabo]

The linter warns for this file, but actually this file seems to be not needed.

I noticed the mock for the project store is already created in the pkg/datastore/datastoretest.

[Warashi]

Thank you!

[t-kikuc]

Great! Thank you!