add gitea sig header check, add Json errors, begin AppState

src/bot.rs

@@ -1,5 +1,13 @@
-use crate::gitea::WebhookType;
+use crate::{env::EnvConfig, gitea::WebhookType};
 
-pub async fn exec(webhook: WebhookType) {
+pub struct Bot {
+    config: EnvConfig,
+}
 
-}
+impl Bot {
+    pub fn new(config: EnvConfig) -> Self {
+        Self { config }
+    }
+
+    pub async fn exec(&self, webhook: WebhookType) {}
+}