feat: Add ability to inspect build information and features at runtime

Also re-adds ability to inspect used features

src/core/Cargo.toml

@@ -2,6 +2,7 @@
 name = "conduwuit_core"
 description.workspace = true
 edition.workspace = true
+homepage.workspace = true
 license.workspace = true
 readme.workspace = true
 repository.workspace = true

src/core/info/introspection.rs

@@ -0,0 +1,7 @@
+//! Information about features the crates were compiled with.
+//! Only available for crates that have called the `introspect_crate` macro
+
+use std::collections::BTreeMap;
+
+pub static ENABLED_FEATURES: std::sync::Mutex<BTreeMap<&str, &[&str]>> =
+	std::sync::Mutex::new(BTreeMap::new());

src/core/info/mod.rs

@@ -1,3 +1,4 @@
+pub mod introspection;
 pub mod room_version;
 pub mod version;
 

src/core/mod.rs

@@ -19,6 +19,7 @@ pub use ::smallstr;
 pub use ::smallvec;
 pub use ::toml;
 pub use ::tracing;
+pub use conduwuit_build_metadata as build_metadata;
 pub use config::Config;
 pub use error::Error;
 pub use info::{
@@ -34,6 +35,8 @@ pub use utils::{implement, result, result::Result};
 
 pub use crate as conduwuit_core;
 
+conduwuit_macros::introspect_crate! {}
+
 #[cfg(any(not(conduwuit_mods), not(feature = "conduwuit_mods")))]
 pub mod mods {
 	#[macro_export]