implementation of images in trivio

added implementation of images in trivios. Lets user add images locally. The images are saved into backend and rendered in frontend.

requested review from @vildemv

assigned to @tinit

added 2 commits

• d0f92c8d - 1 commit from branch main
• 4ff17505 - Merge branch 'main' into 'image'

Compare with previous version

changed target branch from main to master

added 8 commits

• 4ff17505...406161b2 - 7 commits from branch master
• 8baa7b21 - Merge branch 'master' into 'image'

Compare with previous version

mentioned in commit 551f460e

merged