switch to external eiquadprog, fix #76

[olivier-stasse]

This PR assumes that the PR stack-of-tasks/eiquadprog#8 on Eiquadprog has been accepted.
It removes the eigen quad prog solver that has been externalized by @gabrielebndn
The unit test have been validated.
If someone can check the jupyter notebooks and the examples this could be enough.

[olivier-stasse]

Sorry for previous PR it was against the wrong branch.

[nim65s]

You can edit the destination branch instead of close the PR and reopen it :)
I'm marking this PR as draft, as it will have to wait a release of stack-of-tasks/eiquadprog#8

[olivier-stasse]

@nim65s Thanks for the tip. I saw that I could change the title, but not the targeted branch.

[andreadelprete]

Everything looks fine to me!

[olivier-stasse]

Dear Andrea could you have a look to stack-of-tasks/eiquadprog#8 ?
The current PR cannot pass if the one on eiquadprog does not pass before, and I think @gabrielebndn is unfortunately not able to do the review.
It should be easy, as the work was done on what you had done in TSID.
Thanks a lot for your help.

[olivier-stasse]

Dear @nim65s I merged stack-of-tasks/eiquadprog#8 so normally this PR can also be merged.
I let you do it according to the policy.

[nim65s]

The merge of this PR should wait a release release of eiquadprog. But the release of eiquadprog should wait for me to be able to run the integration tests of sot-talos-balance with it. This is currently blocked by other issues : stack-of-tasks/talos_integration_tests#5