0.26.0 add regression floating error and abs error in integrated algo

[Tomansion]

Describe your changes

Completed Regression metric output Added flake

Screenshots (if appropriate):

Issue ticket number and link

168

Checklist before requesting a review

• [x] I have performed a self-review of my code
• [x] I have increased the version number in the frontend/package.json and backend/swagger.yaml files
• [x] I have checked that Black, Flake, Prettier and Cspell have been run on my code