Enable saving and loading LimitsConfiguration (#152)

Impl Serialize, Deserialize for LimitsConfiguration and children

src/api/policies/instance/ratelimits.rs

@@ -1,11 +1,13 @@
 use std::hash::Hash;
 
+use serde::{Deserialize, Serialize};
+
 use crate::types::Snowflake;
 
 /// The different types of ratelimits that can be applied to a request. Includes "Baseline"-variants
 /// for when the Snowflake is not yet known.
 /// See <https://discord.com/developers/docs/topics/rate-limits#rate-limits> for more information.
-#[derive(Clone, Copy, Eq, PartialEq, Debug, Default, Hash)]
+#[derive(Clone, Copy, Eq, PartialEq, Debug, Default, Hash, Serialize, Deserialize)]
 pub enum LimitType {
     AuthRegister,
     AuthLogin,
@@ -25,7 +27,7 @@ pub enum LimitType {
 /// Unlike [`RateLimits`], this struct shows the current ratelimits, not the rate limit
 /// configuration for the instance.
 /// See <https://discord.com/developers/docs/topics/rate-limits#rate-limits> for more information.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Limit {
     pub bucket: LimitType,
     pub limit: u64,

src/instance.rs

@@ -25,7 +25,7 @@ pub struct Instance {
     pub client: Client,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct LimitsInformation {
     pub ratelimits: HashMap<LimitType, Limit>,
     pub configuration: RateLimits,