Re-organize utilities based on category

lib/utils/http_utils.dart

@@ -0,0 +1,68 @@
+import 'dart:convert';
+import 'package:http_parser/http_parser.dart';
+import 'package:xml/xml.dart';
+import '../consts.dart';
+
+String getRequestTitleFromUrl(String? url) {
+  if (url == null || url.trim() == "") {
+    return "untitled";
+  }
+  if (url.contains("://")) {
+    String rem = url.split("://")[1];
+    if (rem.trim() == "") {
+      return "untitled";
+    }
+    return rem;
+  }
+  return url;
+}
+
+(List<ResponseBodyView>, String?)  getResponseBodyViewOptions(MediaType mediaType){
+  var type = mediaType.type;
+  var subtype = mediaType.subtype;
+  //print(mediaType);
+  if(kResponseBodyViewOptions.containsKey(type)){
+    if(subtype.contains(kSubTypeJson)){
+      subtype = kSubTypeJson;
+    }
+    if(subtype.contains(kSubTypeXml)){
+      subtype = kSubTypeXml;
+    }
+    if (kResponseBodyViewOptions[type]!.containsKey(subtype)){
+       return (kResponseBodyViewOptions[type]![subtype]!, kCodeHighlighterMap[subtype] ?? subtype);
+    }
+    return (kResponseBodyViewOptions[type]![kSubTypeDefaultViewOptions]!, subtype);
+  }
+  else {
+    return (kNoBodyViewOptions, null);
+  }
+}
+
+String? formatBody(String body, MediaType? mediaType){
+  if(mediaType != null){
+    var subtype = mediaType.subtype;
+    try {
+      if(subtype.contains(kSubTypeJson)){        
+        final tmp = jsonDecode(body);
+        String result = kEncoder.convert(tmp);
+        return result;
+      }
+      if(subtype.contains(kSubTypeXml)){
+        final document = XmlDocument.parse(body);
+        String result = document.toXmlString(pretty: true, indent: '  ');
+        return result;
+      }
+      if(subtype == kSubTypeHtml){
+        var len = body.length;
+        var lines = kSplitter.convert(body);
+        var numOfLines = lines.length;
+        if(numOfLines !=0 && len/numOfLines <= kCodeCharsPerLineLimit){
+          return body;
+        }
+      }
+    } catch (e) {
+      return null;
+    }
+  }
+  return null;
+}