Feature/hourly set updates (#1012)

* Rename function/variables mixnodes->set

* Stub utility interface

* Rewarded set contract interface

* Move epoch to common, epoch to contract

* Move epoch to the chain

* Rewarded set validator-api

* [ci skip] Generate TS types

* Epoch queries

* Moved new code to a new module

* Restored cosmwasm dependencies to their beta.3 versions for better compatibility with the rest of the codebase

* Rewarded set write reorganisation

* Stub for validator api module  responsible for rewarded set updates

* Reorganised validator api cache

* Pending contract changes

* Relevant updates to the validator client

* Updating rewarded set based on contract state

* Advancing/Setting current epoch in the contract

* Using blocktime as 'now' at startup

* Adjusted validator-api side rewarding code

* Contract cleanup + query for epoch rewarded set heights

* [ci skip] Generate TS types

* Simplified rewarder processing loop and initial sync

* [ci skip] Generate TS types

* Fixed EXISTING query-related unit tests

* Fixed existing unit tests for rewarding-related transactions

* Cargo fmt

* Removed some dead code

* Using cosmwasm 1.0.0-beta3 for compatibility [with cw-storage-plus and rest of codebase]

* Missing TryInto import

* Additional storage and query related unit tests + a bug fix

* Transaction-related unit tests + bug fixes

* Required migration code

* Update common/cosmwasm-smart-contracts/mixnet-contract/src/msg.rs

Co-authored-by: Drazen Urch <drazen@urch.eu>

* Update common/cosmwasm-smart-contracts/mixnet-contract/src/msg.rs

Co-authored-by: Drazen Urch <drazen@urch.eu>

* Constant renaming

* Changed determining previous epoch return type to Option<Epoch> if they would precede the genesis

* Exposed the new endpoint to the wallet

* Epoch-related unit tests fixes

* Recommended #[must_use] on next_epoch method

* Renamed all epoch occurences to interval

As they refer to the 'rewarding interval'

Co-authored-by: Jędrzej Stuczyński <jedrzej.stuczynski@gmail.com>
Co-authored-by: jstuczyn <jstuczyn@users.noreply.github.com>

validator-api/validator-api-requests/src/models.rs

@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 use serde::{Deserialize, Serialize};
+use std::fmt;
 
 #[derive(Clone, Copy, Debug, Serialize, Deserialize, PartialEq, Eq)]
 #[cfg_attr(feature = "ts-rs", derive(ts_rs::TS))]
@@ -39,9 +40,9 @@ pub struct RewardEstimationResponse {
     pub estimated_operator_reward: u64,
     pub estimated_delegators_reward: u64,
 
-    pub current_epoch_start: i64,
-    pub current_epoch_end: i64,
-    pub current_epoch_uptime: u8,
+    pub current_interval_start: i64,
+    pub current_interval_end: i64,
+    pub current_interval_uptime: u8,
     pub as_at: i64,
 }
 
@@ -51,3 +52,20 @@ pub struct StakeSaturationResponse {
     pub saturation: f32,
     pub as_at: i64,
 }
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+#[cfg_attr(feature = "ts-rs", derive(ts_rs::TS))]
+pub struct InclusionProbabilityResponse {
+    pub in_active: f32,
+    pub in_reserve: f32,
+}
+
+impl fmt::Display for InclusionProbabilityResponse {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(
+            f,
+            "in_active: {:.5}, in_reserve: {:.5}",
+            self.in_active, self.in_reserve
+        )
+    }
+}