New relation: Therapy attempt

[pnrobinson]

I think it is also useful to annotate cases where a treatment was tried but did not work.

In the following paper, they tried coenzyme Q10 supplementation (MAXO:0010012) one one patient with no observed benefit

https://pubmed.ncbi.nlm.nih.gov/17186472/

We should use the relation ATTEMPTED_TREATMENT for this? thoughts @mellybelly @cmungall @LCCarmody ?

[pnrobinson]

New relations for POET

1. contraindicated
2. no_observed_benefit

[iimpulse]

Acceptance Criteria:

New releations exist and can create with them.

[iimpulse]

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