Add several Biopragmatics tutorials

[cthoyt]

This PR makes the following additions:

• [x] 5 tutorials about various Biopragmatics tools
  • https://github.com/cthoyt/obook/blob/patch-1/docs/tutorial/curies.md
  • https://github.com/cthoyt/obook/blob/patch-1/docs/tutorial/named-entity-recognition.md
  • https://github.com/cthoyt/obook/blob/patch-1/docs/tutorial/named-entity-normalization.md
  • https://github.com/cthoyt/obook/blob/patch-1/docs/tutorial/named-entity-standardization.md
  • https://github.com/cthoyt/obook/blob/patch-1/docs/tutorial/biomappings.md
• [x] Adds these tutorials to an appropriate index (not sure what to do here)
• [x] Various small additions to lists to include relevant software.

[cthoyt]

@matentzn please let me know how to list these properly in the index (and if I should break this PR up, or if it can be reviewed as one)

[matentzn]

Awwwwwessome!! No need to break this PR up! Just update https://github.com/OBOAcademy/obook/blob/master/mkdocs.yml and ping me for a review!

[cthoyt]

@matentzn done

[cthoyt]

This are some fantastic materials. I have made a few editing suggestions, mainly specifying the technologies covered by the tutorials. If you accept them all, its ready to merge!

Done

[matentzn]

(feel free to announce the new materials in obo-academy channels once they are up!)