chore: use strings.Builder and reflect.TypeFor to simplify code

[suranmiao]

strings.Builder has fewer memory allocations and better performance.
More info: golang/go#75190

Try to use better api reflect.TypeFor instead of reflect.TypeOf when we have known the type.
More info golang/go#60088

[suranmiao]

@gacevicljubisa Hi, Could you please review this PR at your convenience? Thank you very much.

[akrem-chabchoub]

@suranmiao Thank you for your contribution!

I tried running the command on the master branch, but it didn’t seem to trigger any changes.
Are all the changes in your PR automatically generated by running the following command you provied in the description?
go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix ./...

[gacevicljubisa]

@suranmiao changes look good, but title and description are not matching the changes itself.

[suranmiao]

@suranmiao Thank you for your contribution!

I tried running the command on the master branch, but it didn’t seem to trigger any changes. Are all the changes in your PR automatically generated by running the following command you provied in the description? go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix ./...

I conducted related research, and it seems that the code for the tools has a fallback. Currently, it requires compiling a binary executable to achieve this.

[suranmiao]

@suranmiao changes look good, but title and description are not matching the changes itself.

@gacevicljubisa Thanks. Modified.

Please review it again.