apacheGH-35686:[Go] Add AppendTime to TimestampBuilder (apache#35687)

### Rationale for this change

### What changes are included in this PR?

### Are these changes tested?

### Are there any user-facing changes?

* Closes: apache#35686

Lead-authored-by: candiduslynx <candiduslynx@gmail.com>
Co-authored-by: Yevgeny Pats <16490766+yevgenypats@users.noreply.github.com>
Signed-off-by: Matt Topol <zotthewizard@gmail.com>

go/arrow/_tools/tmpl/main.go

@@ -180,7 +180,7 @@ func process(data interface{}, specs []pathSpec) {
 			}
 		}
 
-		ioutil.WriteFile(spec.out, generated, fileMode(spec.in))
+		os.WriteFile(spec.out, generated, fileMode(spec.in))
 	}
 }
 

go/arrow/array/numeric.gen.go.tmpl

@@ -90,9 +90,7 @@ func (a *{{.Name}}) ValueStr(i int) string {
   return a.values[i].FormattedString()
 {{else if or (eq .Name "Time32") (eq .Name "Time64") -}}
   return a.values[i].FormattedString(a.DataType().(*{{.QualifiedType}}Type).Unit)
-{{else if or (eq .Name "Timestamp") -}}
-	return a.values[i].ToTime(a.DataType().(*{{.QualifiedType}}Type).Unit).Format("2006-01-02 15:04:05.999999999")
-{{else if (eq .Name "Duration") -}}	
+{{else if (eq .Name "Duration") -}}
 	// return value and suffix as a string such as "12345ms"
 	return fmt.Sprintf("%d%s", a.values[i], a.DataType().(*{{.QualifiedType}}Type).Unit)	
 {{else if or (eq .Name "Int8") (eq .Name "Int16") (eq .Name "Int32") (eq .Name "Int64") -}}
@@ -116,9 +114,7 @@ func (a *{{.Name}}) GetOneForMarshal(i int) interface{} {
 	return a.values[i].ToTime().Format("2006-01-02")
 {{else if or (eq .Name "Time32") (eq .Name "Time64") -}}
 	return a.values[i].ToTime(a.DataType().(*{{.QualifiedType}}Type).Unit).Format("15:04:05.999999999")
-{{else if or (eq .Name "Timestamp") -}}
-	return a.values[i].ToTime(a.DataType().(*{{.QualifiedType}}Type).Unit).Format("2006-01-02 15:04:05.999999999")
-{{else if (eq .Name "Duration") -}}	
+{{else if (eq .Name "Duration") -}}
 	// return value and suffix as a string such as "12345ms"
 	return fmt.Sprintf("%d%s", a.values[i], a.DataType().(*{{.QualifiedType}}Type).Unit.String())	
 {{else if (eq .Size "1")}}