feat(core): add a limit to no. of outgoing pending friend requests

crates/core/config/Revolt.toml

@@ -47,6 +47,8 @@ webhooks_enabled = false
 [features.limits]
 
 [features.limits.default]
+outgoing_friend_requests = 10
+
 group_size = 100
 bots = 5
 message_length = 2000

crates/core/config/src/lib.rs

@@ -106,6 +106,8 @@ pub struct Api {
 
 #[derive(Deserialize, Debug, Clone)]
 pub struct FeaturesLimits {
+    pub outgoing_friend_requests: usize,
+
     pub group_size: usize,
     pub bots: usize,
     pub message_length: usize,