Mock data providers

Run example:

time hive sync --steemd-url '{"default":"http://127.0.0.1:8090"}' --database-url postgresql://hive@localhost:5432/hive4 --mock-block-data-path mock_block_data_example.json

After sync log into DB and check if there are accounts tester1 and tester2, also check if there is follow op with follower tester1 following tester2.

dariusz-work@asgard:~/Sources/hivemind(dk-mock-data-providers [+])$ psql -U hive -d hive4
psql (13.0 (Ubuntu 13.0-1.pgdg18.04+1), server 10.14 (Ubuntu 10.14-1.pgdg18.04+1))
Type "help" for help.

hive4=# select id from hive_accounts where name='tester1';
  id   
-------
 92465
(1 row)

hive4=# select id from hive_accounts where name='tester2';
  id   
-------
 92466
(1 row)

hive4=# select * from hive_follows where follower=92465 and following=92466;
   id   | follower | following | state |     created_at      | blacklisted | follow_blacklists | follow_muted | block_num 
--------+----------+-----------+-------+---------------------+-------------+-------------------+--------------+-----------
 457074 |    92465 |     92466 |     1 | 2016-09-15 19:47:24 | f           | f                 | f            |   5000002
(1 row)

hive4=#