Add Dex pallet (#407)

* Move pallet-asset-conversion

* update licensing

* initial integration

* Integrate Currency & Assets types

* integrate liquidity tokens

* fmt

* integrate dex pallet tests

* fmt

* compilation error fixes

* integrate dex benchmarks

* fmt

* cargo clippy

* replace all occurrences of "asset" with "coin"

* add the actual add liq/swap logic to in-instructions

* add client side & tests

* fix deny

* Lint and changes

- Renames InInstruction::AddLiquidity to InInstruction::SwapAndAddLiquidity
- Makes create_pool an internal function
- Makes dex-pallet exclusively create pools against a native coin
- Removes various fees
- Adds new crates to GH workflow

* Fix rebase artifacts

* Correct other rebase artifact

* Correct CI specification for liquidity-tokens

* Correct primitives' test to the standardized pallet account scheme

---------

Co-authored-by: Luke Parker <lukeparker5132@gmail.com>

Cargo.lock

@@ -8179,6 +8179,7 @@ dependencies = [
  "parity-scale-codec",
  "scale-info",
  "serai-coins-primitives",
+ "serai-dex-primitives",
  "serai-primitives",
  "sp-core",
  "sp-runtime",
@@ -8259,6 +8260,40 @@ dependencies = [
  "rocksdb",
 ]
 
+[[package]]
+name = "serai-dex-pallet"
+version = "0.1.0"
+dependencies = [
+ "frame-benchmarking",
+ "frame-support",
+ "frame-system",
+ "parity-scale-codec",
+ "scale-info",
+ "serai-coins-pallet",
+ "serai-dex-primitives",
+ "serai-liquidity-tokens-pallet",
+ "serai-primitives",
+ "sp-api",
+ "sp-arithmetic",
+ "sp-core",
+ "sp-io",
+ "sp-runtime",
+ "sp-std",
+]
+
+[[package]]
+name = "serai-dex-primitives"
+version = "0.1.0"
+dependencies = [
+ "frame-benchmarking",
+ "frame-support",
+ "parity-scale-codec",
+ "scale-info",
+ "serai-primitives",
+ "sp-runtime",
+ "sp-std",
+]
+
 [[package]]
 name = "serai-docker-tests"
 version = "0.1.0"
@@ -8301,6 +8336,7 @@ dependencies = [
  "parity-scale-codec",
  "scale-info",
  "serai-coins-pallet",
+ "serai-dex-pallet",
  "serai-in-instructions-primitives",
  "serai-primitives",
  "serai-validator-sets-pallet",
@@ -8308,6 +8344,7 @@ dependencies = [
  "sp-core",
  "sp-io",
  "sp-runtime",
+ "sp-std",
  "thiserror",
 ]
 
@@ -8326,6 +8363,20 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "serai-liquidity-tokens-pallet"
+version = "0.1.0"
+dependencies = [
+ "frame-support",
+ "frame-system",
+ "parity-scale-codec",
+ "scale-info",
+ "serai-dex-primitives",
+ "serai-primitives",
+ "sp-core",
+ "sp-std",
+]
+
 [[package]]
 name = "serai-message-queue"
 version = "0.1.0"
@@ -8543,7 +8594,10 @@ dependencies = [
  "parity-scale-codec",
  "scale-info",
  "serai-coins-pallet",
+ "serai-dex-pallet",
+ "serai-dex-primitives",
  "serai-in-instructions-pallet",
+ "serai-liquidity-tokens-pallet",
  "serai-primitives",
  "serai-signals-pallet",
  "serai-validator-sets-pallet",