Define recursively -h/--help short help (#419)

Using context ctx.help_option_names
https://click.palletsprojects.com/en/8.1.x/api/#context

Have to keep top level @click.help_option("-h", "--help") otherwise
it’s not define since the context is not yet initialized

silkaj/cli.py

@@ -149,6 +149,7 @@ def cli(
     ctx.obj["AUTH_WIF"] = auth_wif
     ctx.obj["DISPLAY_DOCUMENT"] = display
     ctx.obj["DRY_RUN"] = dry_run
+    ctx.help_option_names = ["-h", "--help"]
 
 
 cli.add_command(about)
@@ -158,7 +159,6 @@ cli.add_command(license_command)
 
 
 @cli.group("blockchain", help="Blockchain related commands")
-@click.help_option("-h", "--help")
 def blockchain_group() -> None:
     pass
 
@@ -170,7 +170,6 @@ blockchain_group.add_command(verify_blocks_signatures)
 
 
 @cli.group("money", help="Money management related commands")
-@click.help_option("-h", "--help")
 def money_group() -> None:
     pass
 
@@ -181,7 +180,6 @@ money_group.add_command(transfer_money)
 
 
 @cli.group("wot", help="Web-of-Trust related commands")
-@click.help_option("-h", "--help")
 def wot_group() -> None:
     pass
 
@@ -197,7 +195,6 @@ wot_group.add_command(status)
     help="Create, save, verify or publish revocation document.\n\
 Subcommands optionally take the path to the revocation document.",
 )
-@click.help_option("-h", "--help")
 def revocation_group() -> None:
     pass