Implemented "blocked" command

This lists accounts the logged in user has blocked. It is useful for
creating regular backups.

toot/api.py

@@ -533,6 +533,10 @@ def unblock(app, user, account):
     return _account_action(app, user, account, 'unblock')
 
 
+def blocked(app, user):
+    return _get_response_list(app, user, "/api/v1/blocks")
+
+
 def verify_credentials(app, user):
     return http.get(app, user, '/api/v1/accounts/verify_credentials').json()
 

toot/commands.py

@@ -510,6 +510,11 @@ def unblock(app, user, args):
     print_out("<green>✓ {} is no longer blocked</green>".format(args.account))
 
 
+def blocked(app, user, args):
+    response = api.blocked(app, user)
+    print_acct_list(response)
+
+
 def whoami(app, user, args):
     account = api.verify_credentials(app, user)
     print_account(account)

toot/console.py

@@ -726,6 +726,12 @@ ACCOUNTS_COMMANDS = [
         ],
         require_auth=True,
     ),
+    Command(
+        name="blocked",
+        description="List accounts the given account muted",
+        arguments=[],
+        require_auth=True,
+    ),
 ]
 
 TAG_COMMANDS = [