theme.json : How to add a font

permutation.json

{
					"fontFace": [
						{
							"fontFamily": "Bitter",
							"fontStyle": "normal",
							"fontWeight": "400 700",
							"src": [
								"file:./assets/fonts/Bitter/Bitter-VariableFont_wght.woff2"
							]
						},
						{
							"fontFamily": "Bitter Italic",
							"fontStyle": "italic",
							"fontWeight": "400 700",
							"src": [
								"file:./assets/fonts/Bitter/Bitter-Italic-VariableFont_wght.woff2"
							]
						}
					],
					"fontFamily": "\"Bitter\", sans-serif",
					"name": "Bitter",
					"slug": "bitter"
				}