fix: use exifreader for png info

- replace pnginfo module
- allow jpeg for tag extraction
- rename pnginfo to getprompt

bot/txt2imgCommand.ts

@@ -64,22 +64,13 @@ async function txt2img(ctx: ErisContext, match: string, includeRepliedTo: boolea
   }
 
   const repliedToText = repliedToMsg?.text || repliedToMsg?.caption;
-  const isReply = includeRepliedTo && repliedToText;
-
-  if (isReply) {
+  if (includeRepliedTo && repliedToText) {
     // TODO: remove bot command from replied to text
     params = parsePngInfo(repliedToText, params);
   }
 
   params = parsePngInfo(match, params, true);
 
-  if (isReply) {
-    const parsedInfo = parsePngInfo(repliedToText, undefined);
-    if (parsedInfo.prompt !== params.prompt) {
-      params.seed = parsedInfo.seed ?? -1;
-    }
-  }
-
   if (!params.prompt) {
     await ctx.reply(
       "Please tell me what you want to see." +