Add plugin section headers to generated config.ini

[abitmore]

PR for #1407.

Sample output:

...
# Whether to enable tracking of votes of standby witnesses and committee members. Set it to true to provide accurate data to API clients, set to false for slightly better performance.
# enable-standby-votes-tracking = 


# ==============================================================================
# witness plugin options
# ==============================================================================

# Enable block production, even if the chain is stale.
enable-stale-production = false

# Percent of witnesses (0-99) that must be participating in order to produce blocks
required-participation = false

# ID of witness controlled by this node (e.g. "1.6.5", quotes are required, may specify multiple times)
# witness-id = 

# Tuple of [PublicKey, WIF private key] (may specify multiple times)
private-key = ["BTS6MRyAjQq8ud7hVNYcfnVPJqcVpscN5So8BhtHuGYqET5GDW5CV","5KQwrPbwdL6PhXujxW37FSSQZ1JiwsST4cqQzDeyXtP79zkvFD3"]


# ==============================================================================
# debug_witness plugin options
# ==============================================================================

# Tuple of [PublicKey, WIF private key] (may specify multiple times)
debug-private-key = ["BTS6MRyAjQq8ud7hVNYcfnVPJqcVpscN5So8BhtHuGYqET5GDW5CV","5KQwrPbwdL6PhXujxW37FSSQZ1JiwsST4cqQzDeyXtP79zkvFD3"]


# ==============================================================================
# account_history plugin options
# ==============================================================================

# Account ID to track history for (may specify multiple times)
# track-account = 

...

[pmconrad]

Nice.
I suppose the additional pseudo-options don't hurt.

[oxarbitrage]

nice job, a lot better than #1411