Decibel: add layout and global spacing (#6574)

Co-authored-by: Jason Crist <jcrist@pbking.com>

decibel/theme.json

@@ -32,8 +32,8 @@
 			]
 		},
 		"layout": {
-			"contentSize": "620px",
-			"wideSize": "1000px"
+			"contentSize": "664px",
+			"wideSize": "1195px"
 		},
 		"typography": {
 			"fontFamilies": [
@@ -210,6 +210,12 @@
 				}
 			}
 		},
+		"spacing": {
+			"padding": {
+				"left": "clamp(1.25rem, 1.25rem + ((1vw - 0.5rem) * 13) , 8rem)",
+				"right": "clamp(1.25rem, 1.25rem + ((1vw - 0.5rem) * 13) , 8rem)"
+			}
+		},
 		"typography": {
 			"fontFamily": "var(--wp--preset--font-family--dm-mono)"
 		}