feat: added bootstrap node detection in config

[melsonic]

Description

Added a boolean value for detecting a bootstrap node in the config file.

Related issue(s)

• Fixes Detecting Bootstraper node #756

/claim #756

[themantre]

@melsonic
Thanks for your PR. We are going to detect the Bootstrap node without changing the config file.
We clearly mentioned that:

Another way is to read all bootstrap peers in the config, and 
if the node's peer ID is the same as one of the bootstrap nodes, it can be marked as a bootstrap node. 
In this case, we keep the config intact.