Feature/rust rewarding (#750)

* Calculating gas fees

* Ability to set custom fees

* Added extra test

* Removed commented code

* Moved all msg types to common contract crate

* Temporarily disabling get_tx method

* Finishing up nymd client API

* Comment fix

* Remaining fee values

* Some cleanup

* Removed needless borrow

* Fixed imports in contract tests

* Moved error types around

* New ValidatorClient

* Experiment with new type of defaults

* Removed dead module

* Dealt with unwrap

* Migrated mixnode to use new validator client

* Migrated gateway to use new validator client

* Mixnode and gateway adjustments

* More exported defaults

* Clients using new validator client

* Fixed mixnode upgrade

* Moved default values to a new crate

* Changed behaviour of validator client features

* Migrated basic functions of validator api

* Updated config + fixed startup

* Fixed wasm client build

* Integration with the explorer api

* Removed tokio dev dependency

* Needless borrow

* Fixex wasm client build

* Fixed tauri client build

* Needless borrows

* New tables for rewarding

* Updated cosmos-sdk version

* Removed reward-specific node status routes

* New rewarding-specific config entries

* Additional network defaults

* Initial periodic rewards from validator api

* Replaced print with log

* Filtering nodes with uptime > 0

* Additional failure logging statements

* Fixed operation ordering

* Adjusted next rewarding epoch determination

* Modified rewarding behaviour to keep track of rewarding in progress

* Improved error message on config load failure

* Additional log statement

* Adjusted rewarding gas limit calculation

* Made naming slightly more consistent

* Fixed incorrect parentheses placement

* Fixed fee calculation

* Cargo fmt

* Removed failed merge artifacts

* Introduced comment for any future reward modification

* typos

* Helper functions for the future

* Making @mfahampshire 's life easier

* Redesigned epoch + rewarding skipped epochs (if possible)

* Removed old merge artifacts

* Naming consistency

* Constraining arguments

* Removed unnecessary if branch

* Ignore monitor check for current epoch

* Additional checks for current epoch data

* Monitor threshold check

* cargo fmt

* Fixed post-merge issues in transactions.rs

validator-api/src/node_status_api/models.rs

@@ -7,17 +7,17 @@ use rocket::http::{ContentType, Status};
 use rocket::response::{self, Responder, Response};
 use rocket::Request;
 use serde::{Deserialize, Serialize};
-use sqlx::types::time::OffsetDateTime;
 use std::convert::TryFrom;
 use std::fmt::{self, Display, Formatter};
 use std::io::Cursor;
+use time::OffsetDateTime;
 
 // todo: put into some error enum
 #[derive(Debug)]
 pub struct InvalidUptime;
 
 // value in range 0-100
-#[derive(Clone, Serialize, Deserialize, Debug)]
+#[derive(Clone, Copy, Serialize, Deserialize, Debug)]
 pub struct Uptime(u8);
 
 impl Uptime {
@@ -76,17 +76,17 @@ impl TryFrom<i64> for Uptime {
 
 #[derive(Clone, Serialize, Deserialize, Debug)]
 pub struct MixnodeStatusReport {
-    identity: String,
-    owner: String,
+    pub(crate) identity: String,
+    pub(crate) owner: String,
 
-    most_recent_ipv4: bool,
-    most_recent_ipv6: bool,
+    pub(crate) most_recent_ipv4: bool,
+    pub(crate) most_recent_ipv6: bool,
 
-    last_hour_ipv4: Uptime,
-    last_hour_ipv6: Uptime,
+    pub(crate) last_hour_ipv4: Uptime,
+    pub(crate) last_hour_ipv6: Uptime,
 
-    last_day_ipv4: Uptime,
-    last_day_ipv6: Uptime,
+    pub(crate) last_day_ipv4: Uptime,
+    pub(crate) last_day_ipv6: Uptime,
 }
 
 impl MixnodeStatusReport {
@@ -122,17 +122,17 @@ impl MixnodeStatusReport {
 
 #[derive(Clone, Serialize, Deserialize, Debug)]
 pub struct GatewayStatusReport {
-    identity: String,
-    owner: String,
+    pub(crate) identity: String,
+    pub(crate) owner: String,
 
-    most_recent_ipv4: bool,
-    most_recent_ipv6: bool,
+    pub(crate) most_recent_ipv4: bool,
+    pub(crate) most_recent_ipv6: bool,
 
-    last_hour_ipv4: Uptime,
-    last_hour_ipv6: Uptime,
+    pub(crate) last_hour_ipv4: Uptime,
+    pub(crate) last_hour_ipv6: Uptime,
 
-    last_day_ipv4: Uptime,
-    last_day_ipv6: Uptime,
+    pub(crate) last_day_ipv4: Uptime,
+    pub(crate) last_day_ipv6: Uptime,
 }
 
 impl GatewayStatusReport {