Implement block emissions (#551)

* add genesis liquidity implementation

* add missing deposit event

* fix CI issues

* minor fixes

* make math safer

* fix fmt

* implement block emissions

* make remove liquidity an authorized call

* implement setting initial values for coins

* add genesis liquidity test & misc fixes

* updato develop latest

* fix rotation test

* fix licencing

* add fast-epoch feature

* only create the pool when adding liquidity first time

* add initial reward era test

* test whole pre ec security emissions

* fix clippy

* add swap-to-staked-sri feature

* rebase changes

* fix tests

* Remove accidentally commited ETH ABI files

* fix some pr comments

* Finish up fixing pr comments

* exclude SRI from is_allowed check

* Misc changes

---------

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

substrate/emissions/primitives/src/lib.rs

@@ -0,0 +1,26 @@
+#![cfg_attr(docsrs, feature(doc_cfg))]
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+use serai_primitives::{DAYS, YEARS, SeraiAddress, system_address};
+
+// Protocol owned liquidity account.
+pub const POL_ACCOUNT: SeraiAddress = system_address(b"Serai-protocol_owned_liquidity");
+
+/// INITIAL_REWARD = 100,000 SRI / BLOCKS_PER_DAY for 60 days
+pub const INITIAL_REWARD_PER_BLOCK: u64 = (100_000 * 10u64.pow(8)) / DAYS;
+
+/// REWARD = 20M SRI / BLOCKS_PER_YEAR
+pub const REWARD_PER_BLOCK: u64 = (20_000_000 * 10u64.pow(8)) / YEARS;
+
+/// 20% of all stake desired to be for Serai network
+pub const SERAI_VALIDATORS_DESIRED_PERCENTAGE: u64 = 20;
+
+/// Desired unused capacity ratio for a network assuming capacity is 10,000.
+pub const DESIRED_DISTRIBUTION: u64 = 1_000;
+
+/// Percentage scale for the validator vs. pool reward distribution.
+pub const ACCURACY_MULTIPLIER: u64 = 10_000;
+
+/// The block to target for economic security
+pub const SECURE_BY: u64 = YEARS;