Is their any possibility to make it embedded. Till now postgresql has not done this embedded mode and i want to work on how it can be embedded and contribute. please help me how to start or suggest the idea-.
Step 1 - Fork the project...
Changing the fundamental architecture of the system is not something I would expect a project with this long of history to attempt to do directly. While the people working on the core product are welcome to spend their time however they like I don't imagine any of them would be willing to commit code to core pertaining to this capability. Most, if not all, of them likely don't believe it is even a good idea generally.