add Open Graph protocol

[blue-bird1]

Is your feature request related to a problem? Please describe.
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Telegram and fackbook can't display my blog preview because Open Graph protocol is not supported.

Describe the solution you'd like
A clear and concise description of what you want to happen. http://ogp.me/. Just add a few meta tags

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
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[UtkarshVerma]

Thanks for the feature request. As of now I don't have the time, but I will look into this when I'll be free, after a couple of months or so.

[UtkarshVerma]

Self note: https://gohugo.io/templates/internal/#configure-open-graph

[FAUSheppy]

It's also very easy to implement ogp manually, I looked at the hugo module and found it to be clumsy and adding a lot of boilerplate.

{{ if isset .Params "cover" }}
  <meta property="og:title" content="{{- .Params.title | plainify -}}" />
  <meta property="og:image" content="{{- .Site.Params.baseURL -}}{{- .Params.cover -}}" />
{{ else }}
    <meta property="og:title" content="{{- .Site.Params.title | plainify -}}" />
    <meta property="og:image" content="{{- .Site.Params.baseURL -}}{{- .Site.Params.cover -}}" />
{{ end }}

https://github.com/FAUSheppy/atlantishq-blog-dreamplus/commit/88859ea8b81908e8c4c4854807166901c6fcef43