Add filter to package server and fix templates for devstudio

Templates/webapp/.crossarchiveignore

@@ -0,0 +1,2 @@
+bin
+obj

Templates/webapp/cross.json

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+{
+	"dependencies": [
+	],
+	"info": {
+		
+		"template_ignored_files": [
+			"bin",
+			"obj"
+		],
+		"template_info": {
+			"type": "webapp",
+        	"license": "MIT"
+		},
+		"template_name": "webapp",
+		"template_name_pretty": "Web Application",
+		"template_project_dependencies": [
+		],
+		"repo": "https://onedev.site.tesses.net/CrossLang/CrossLangExtras",
+        "homepage": "https://crosslang.tesseslanguage.com/",
+		"type": "template",
+		"description": "A web app (for webview or eventual cloud OS)"
+	},
+	"name": "Tesses.CrossLang.Template.WebApp",
+	"version": "1.0.0.0-prod"
+}

Templates/webapp/src/main.tcross

@@ -0,0 +1,12 @@
+
+func WebAppMain(args)
+{
+    return (ctx)=>{
+        if(ctx.Path == "/")
+        {
+            ctx.WithMimeType("text/html").SendText(<h1>Hello, world</h1>);
+            return true;
+        }
+        return false;
+    };
+}