Create dictionary to pretty json util

[dmytrostriletskyi]

Description

The util allows you to print the data, not in the way:

$ remme blocks list
[{'header_signature': '...', ...}, {'header_signature': '...', ...}, {'header_signature': '...', ...}]

But in the way:

$ remme blocks list
[
    {
        'header_signature': '...', 
        ...
    }, 
    {
        'header_signature': '...', 
        ...
    }
]

Usage:

data = fetch_data(...)
click.echo(dict_to_pretty_json(data))

[codecov-io]

Codecov Report

Merging #14 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop      #14   +/-   ##
========================================
  Coverage    78.78%   78.78%           
========================================
  Files            7        7           
  Lines           66       66           
========================================
  Hits            52       52           
  Misses          14       14

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