Adding "help" function to txt2img

Base form of the "help" function in txt2img

bot/txt2imgCommand.ts

@@ -67,6 +67,28 @@ async function txt2img(ctx: ErisContext, match: string, includeRepliedTo: boolea
 
   params = parsePngInfo(match, params);
 
+  if (ctx.message.text.trim() == "help") {
+        await ctx.reply(`
+        Usage: /txt2img <tags> [options]
+        <>: required
+        []: optional
+        available options:
+
+        negative:<tags>
+        steps:<number>
+        detail:<number>
+        size:<number>x<number>
+        upscale:<multiplier number> 
+        denoising:<number> between 0 and 1 with two decimal places 
+
+        Example:
+        /txt2img dog, anthro, woodland steps:40 detail:7 size:500x600 upscale:2 denoising:0.57 negative:badyiffymix, boring_e621_fluffyrock_v4
+        `, {
+        reply_to_message_id: ctx.message?.message_id,
+      });
+    }
+
+
   if (!params.prompt) {
     await ctx.reply(
       "Please tell me what you want to see." +