feat(add_events): added add_events macro, and some small networking events partially.

bevy-add-events-macro/Cargo.toml

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+[package]
+name = "bevy-add-events-macro"
+version = "0.1.0"
+edition = "2021"
+authors = ["Malek <pocmalek@gmail.com>"]
+description = "A macro to add multiple events to a bevy app easily"
+repository = "https://git.tebibyte.media/nexus"
+publish = true
+license = "MIT"
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

bevy-add-events-macro/README.md

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+This is a macro to add events.
+Given these events:
+
+    struct Event1;
+    struct Event2;
+    struct Event3;
+    struct Event4;
+    struct Event5;
+
+This is the code you have to normally write in bevy
+
+    pub fn main() {
+        let mut app = App::new();
+        app.add_event::<Event1>();
+        app.add_event::<Event2>();
+        app.add_event::<Event3>();
+        app.add_event::<Event4>();
+        app.add_event::<Event5>();
+       
+    }
+
+And this is the code you can write with the add_events! macro!
+
+    pub fn main() {
+        let mut app = App::new();
+        add_events!(app, Event1, Event2, Event3, Event4, Event5);
+    }

bevy-add-events-macro/src/lib.rs

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+#[macro_export]
+macro_rules! add_events{
+    ($a:ident,$b:ty)=>{
+        {
+            $a.add_event::<$b>()
+        }
+    };
+    ($a:ident,$b:ty $(,$c:ty)*)=> {
+        {
+            add_events!($a, $b); add_events!($a $(,$c)*)
+        }
+    }
+}