feat: implement generic <Avatar> component

utils/generateDefaultIcon.ts

@@ -0,0 +1,38 @@
+export default (name: string, seed: string): string => {
+	const canvas = document.createElement("canvas");
+	const ctx = canvas.getContext("2d");
+	if (canvas && ctx) {
+		canvas.width = 256;
+		canvas.height = 256;
+
+		// get the first char from every word in the guild name
+		let previewName = "";
+		if (name.length > 3) {
+			let guildName: string[] = name.split(' ')
+			for (let i = 0; i < 3; i ++) {
+				if (guildName.length > i) {
+					previewName += guildName[i].charAt(0)
+				} else {
+					break
+				}
+			}
+		} else {
+			previewName = name
+		}
+
+		// fill background using seeded colour
+		ctx.fillStyle = generateIrcColor(seed, 50)
+		ctx.fillRect(0, 0, 256, 256)
+
+		ctx.fillStyle = 'white'
+		ctx.textAlign = 'center'
+		ctx.textBaseline = 'middle'
+		ctx.font = 'bold 96px Arial, Helvetica, sans-serif'
+		// 136 isn't actually centered, but it *looks* centered
+		ctx.fillText(previewName, 128, 136)
+
+		return canvas.toDataURL("image/png");
+	}
+
+	return "https://tenor.com/view/dame-da-ne-guy-kiryukazuma-kiryu-yakuza-yakuza-0-gif-14355451116903905918"
+}