Westend: Fellowship Treasury (#2532)

Treasury Pallet Instance for the Fellowship in Westend Collectives.

In this update, we present a Treasury Pallet Instance that is under the
control of the Fellowship body, with oversight from the Root and
Treasurer origins. Here's how it is governed:
- the Root origin have the authority to reject or approve spend
proposals, with no amount limit for approvals.
- the Treasurer origin have the authority to reject or approve spend
proposals, with approval limits of up to 10,000,000 DOT.
- Voice of all Fellows ranked at 3 or above can reject or approve spend
proposals, with a maximum approval limit of 10,000 DOT.
- Voice of Fellows ranked at 4 or above can also reject or approve spend
proposals, with a maximum approval limit of 10,000,000 DOT.

Additionally, we introduce the Asset Rate Pallet Instance to establish
conversion rates from asset A to B. This is used to determine if a
proposed spend amount involving a non-native asset is permissible by the
commanding origin. The rates can be set up by the Root, Treasurer
origins, or Voice of all Fellows.

---------

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
Co-authored-by: joepetrowski <joe@parity.io>

Cargo.lock

@@ -885,6 +885,7 @@ dependencies = [
  "asset-test-utils",
  "cumulus-pallet-dmp-queue",
  "cumulus-pallet-parachain-system",
+ "cumulus-pallet-xcmp-queue",
  "emulated-integration-tests-common",
  "frame-support",
  "frame-system",
@@ -2613,6 +2614,21 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "collectives-westend-emulated-chain"
+version = "0.0.0"
+dependencies = [
+ "collectives-westend-runtime",
+ "cumulus-primitives-core",
+ "emulated-integration-tests-common",
+ "frame-support",
+ "parachains-common",
+ "serde_json",
+ "sp-core",
+ "sp-runtime",
+ "westend-emulated-chain",
+]
+
 [[package]]
 name = "collectives-westend-runtime"
 version = "1.0.0"
@@ -2634,6 +2650,7 @@ dependencies = [
  "hex-literal",
  "log",
  "pallet-alliance",
+ "pallet-asset-rate",
  "pallet-aura",
  "pallet-authorship",
  "pallet-balances",
@@ -2653,6 +2670,7 @@ dependencies = [
  "pallet-timestamp",
  "pallet-transaction-payment",
  "pallet-transaction-payment-rpc-runtime-api",
+ "pallet-treasury",
  "pallet-utility",
  "pallet-xcm",
  "parachains-common",
@@ -21049,6 +21067,7 @@ version = "0.0.0"
 dependencies = [
  "asset-hub-westend-emulated-chain",
  "bridge-hub-westend-emulated-chain",
+ "collectives-westend-emulated-chain",
  "emulated-integration-tests-common",
  "penpal-emulated-chain",
  "westend-emulated-chain",