Add KV store module in GO client

[0oM4R]

• Add KV store valid function in go substrate this will be used in V client

this may help https://github.com/threefoldtech/substrate-client/compare/master...implement_kvstore

[sameh-farouk]

Is this one still relevant @0oM4R @AhmedHanafy725 Do you mean tfchain-client-go ?

[AhmedHanafy725]

not sure if it's still required for the v client, but it's good to have it on the tfchain go client

[Eslam-Nawara]

WIP: After investigation, I was able to implement set/get and delete operations.

The listing of all key-value pairs had a problem that the client used in the chain doesn't support creating/listing using partial key, so couldn't list the keys in the store

Reported here: https://github.com/centrifuge/go-substrate-rpc-client/issues/300 https://github.com/centrifuge/go-substrate-rpc-client/issues/365

we will need more time to find another client or fork and update the client to support using partial keys.

[Eslam-Nawara]

Work Completed

• forked the rpc client and updated it to be able to use partial key to list all values in the store
• updated the list function to return key-value pairs with decoded format