Add council and democracy to consensus runtime

[vedhavyas]

This PR adds Council and Democracy(scope limited, read notes) to consensus runtime.

Council:

• Sudo can set the council members over the extrinsic
• I have skipped adding council election in this PR since allows anyone with enough funds to become a council memeber. This can be added before mainnnet or sometime after mainnet.

Democracy:
For the democracy, at the moment instead of anyone submitting the proposal, the origin is set to any council member. So only a council member can open proposal through democracy directly. This should be changed when we want anyone to submit proposals to democracy.

I have also left TODO for parameters where necessary and also enabled instant execution for democracy. Ideally, in mainnet this Instant execution may not be required.

cc: @dariolina @jfrank-summit @nazar-pc

Please take a look and let me know if you have any questions/concerns

Code contributor checklist:

• I have read, understood and followed contributing guide

[teor2345]

Looks good, just some optional suggestions for making the docs clearer.

[nazar-pc]

Looks like a basic setup, I don't have any opinion on the actual parameters though, would be nice if Dariia could take a look

[dariolina]

@vedhavyas can you clarify this?

I have skipped adding council election in this PR since allows anyone with enough funds to become a council member.

Does this refer to this election? If so, you're right, we don't want that yet.

[dariolina]

@vedhavyas to be able to test this on devnet, can we have voting/enactment period equal to something like 5 min in devnet spec?

[vedhavyas]

Does this refer to this election? If so, you're right, we don't want that yet.

Yes

@vedhavyas to be able to test this on devnet, can we have voting/enactment period equal to something like 5 min in devnet spec?

This should be possible through pallet-runtime-configs or introducing this macro. Latter brings a feature that needs to be enabled while building. Thoughts @nazar-pc ?

[nazar-pc]

I think genesis config option would be preferred, feature seems fragile, but if we need it as one-off test and remove shortly after than that'll work too.

[dariolina]

Looks good to me, dk if anyone has comments on the last commit

[teor2345]

Re-approving after chain spec update

[dariolina]

@vedhavyas can we get conflicts resolved and merge this?

[nazar-pc]

This will likely conflict with #2969 that is about to be merged

[vedhavyas]

Would be great to get this in today.
If anyone has a moment, can you give a thumbsup please