Allow to set only name="robots" meta tag, or only name="googlebot" meta tag, or both

[watanabemasahiro128]

Is your feature request related to a problem? Please describe.

I would prefer not to include the name="googlebot" meta tag in the head tag, since the name="googlebot" meta tag is unnecessary if there is a name="robots" meta tag.

Describe the solution you'd like

I would like the feature to set either only the name="robots" meta tag or the name="googlebot" meta tag, or both.