addition of spacewalk pallets to pendulum

[gianfra-t]

@pendulum-chain/product: This PR adds changes to the node client code that require a redeployment of the collator nodes to take effect. Please ensure that the collator nodes are redeployed after this PR is merged. This is because of the new RPC methods that Spacewalk brings (and genesis config).

Closes #400 .

Changes

This PR is for the addition of all the relevant Spacewalk pallets into the Pendulum runtime. It mostly adopt the same configuration used in Amplitude, except for:

• DiaOracleKeyConverter converter, where chain and token is different.
• Decay rate of the per-block rewards.

Extra notes

• Although we must add entries into the genesis config for the new pallets, this values are taken from Amplitude as-is. In any case this values will not be used on the live chain.
• On storage versions: After addition, the new pallets will have a storage version of 0 or default. This is fine since none of them have ever performed migrations.

[gianfra-t]

@ebma should we test the functionality of the newly added pallets in something like zombienet/chopsticks? Or is it okay since we already know they work in Amplitude? WDYT

[ebma]

should we test the functionality of the newly added pallets in something like zombienet/chopsticks? Or is it okay since we already know they work in Amplitude? WDYT

I think we should test it but let's rather test the whole runtime when we are about to release. Meaning, I would rather test the runtime once we have the PR to bump spec and transaction versions.

[gianfra-t]

let's rather test the whole runtime when we are about to release.

Makes sense!

[gianfra-t]

Sorry @ebma, I think you need to approve again. I fixed indentations as much as I could and was waiting for the CI.