feat!: create Ratio and use it for aspectRatio and displayAspectRatio and frameRate#336

MarcAntoine-Arnaud wants to merge 4 commits intoebu:devebu/ebucoreplus:devfrom

MarcAntoine-Arnaud:feat/ratioMarcAntoine-Arnaud/ebucoreplus:feat/ratioCopy head branch name to clipboard