Refactor code changes

[devpatel43543]

hii @stleary

i have refactored changes in following 3 files to enhance readability and maintainability:

1. Decompose Conditional in valueToString() (JSONWriter.java):

   • Extracted a complex condition into a method (isDirectlyConvertibleToJSON()) to improve readability.
     Commit

2. Extract Method in toString() (HTTP.java):

   • Divided the method into smaller, focused methods to follow the Single Responsibility Principle.
     Commit

3. Rename Variable in JSONObject:

   • Renamed variables (x → jsonTokener, c → currentChar) for better clarity and readability.
     Commit