feat: upgrade contracts to vrf v2 (#128)

* use vrf v2 direct funding for RandomNumberConsumer
* use vrf v2 subscription for RandomSVG
* change auto fund amount to 5 LINK

Co-authored-by: ivaylonikolov7 <[email protected]>
Co-authored-by: imollov <[email protected]>

Merge pull request #121 from hackbg/feature/add-gtmid-gh-pages

fix(ci): add gtm id to gh pages workflow