docs(readme): add bitcoin badge and license logo

[bitcoin-tools]

Describe the changes and your approach

Verification Checklist

• I performed a self-review of my changes and approve them.
• I checked of the automated test results for any irregularities.
• I manually tested the code changes on my local environment.
• I considered changes to the README or test docs. (Check if not applicable.)

[bitcoin-tools]

Bitcoin logo taken from here: https://shields.io/blog/sunsetting-shields-custom-logos

[bitcoin-tools]

Data for justice taken from here after setting color to white: https://www.svgrepo.com/svg/485749/justice?edit=true

Then running:

user1@comp4:~/Downloads$ base64 -w 0 justice-svgrepo-com.svg 
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@comp4:~/Downloads$