jam4s: m1 delivery

[celadari]

Milestone Delivery Checklist

• The milestone-delivery-template.md has been copied and updated.
• I have disclosed any and all sources of reused code in the submitted repositories and have done my due diligence to meet its license requirements.
• In case of acceptance, invoices must be submitted and payments will be transferred to the Polkadot account provided in the invoice.
• The delivery is according to the rules of the JAM Prize.

[github-actions]

T&C Assistant Lite bot All Contributors have signed the T&Cs.
_{Posted by the CLA Assistant Lite bot.}

[celadari]

I have read and hereby sign the JAM Prize Terms and Conditions.

[tommyldev]

I have read and hereby sign the JAM Prize Terms and Conditions.

[celadari]

recheck

[sergey-astapov]

I have read and hereby sign the JAM Prize Terms and Conditions.

[subotic]

I have read and hereby sign the JAM Prize Terms and Conditions.