Trace Logging on Permission Denied & ColorFormat (#6618)

* Add log.ColorFormat and log.ColorFormatted

Structs can now implement log.ColorFormatted to provide their own
colored format when logged with `%-v` or additional flags.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Add basic ColorFormat to repository and user

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Add basic ColorFormat to access and unit

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Add ColorFormat to permission and on trace log it

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Add log.NewColoredIDValue to make ID value coloring consistent

Signed-off-by: Andrew Thornton <art27@cantab.net>

* formatting changes

* Add some better tracing to permission denied for read issues/pulls

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Add Trace logging on permission denied

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Remove isTrace() check from deferred func

* Adjust repo and allow logging of team

* use FormatInt instead of Itoa

* Add blank line

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Update access.go

models/unit.go

@@ -5,7 +5,10 @@
 package models
 
 import (
+	"fmt"
 	"strings"
+
+	"code.gitea.io/gitea/modules/log"
 )
 
 // UnitType is Unit's Type
@@ -22,6 +25,33 @@ const (
 	UnitTypeExternalTracker                     // 7 ExternalTracker
 )
 
+func (u UnitType) String() string {
+	switch u {
+	case UnitTypeCode:
+		return "UnitTypeCode"
+	case UnitTypeIssues:
+		return "UnitTypeIssues"
+	case UnitTypePullRequests:
+		return "UnitTypePullRequests"
+	case UnitTypeReleases:
+		return "UnitTypeReleases"
+	case UnitTypeWiki:
+		return "UnitTypeWiki"
+	case UnitTypeExternalWiki:
+		return "UnitTypeExternalWiki"
+	case UnitTypeExternalTracker:
+		return "UnitTypeExternalTracker"
+	}
+	return fmt.Sprintf("Unknown UnitType %d", u)
+}
+
+// ColorFormat provides a ColorFormatted version of this UnitType
+func (u UnitType) ColorFormat(s fmt.State) {
+	log.ColorFprintf(s, "%d:%s",
+		log.NewColoredIDValue(u),
+		u)
+}
+
 var (
 	// allRepUnitTypes contains all the unit types
 	allRepUnitTypes = []UnitType{