Add server and client build versions

shared/src/lib.rs

@@ -1,4 +1,5 @@
 use notmuch::SearchSummary;
+use build_info::{VersionControl,BuildInfo};
 use serde::{Deserialize, Serialize};
 
 #[derive(Serialize, Deserialize, Debug)]
@@ -33,3 +34,22 @@ pub mod urls {
         }
     }
 }
+pub fn build_version(bi:fn()->&'static BuildInfo) -> String {
+    fn commit(git: &Option<VersionControl>) -> String {
+        let Some(VersionControl::Git(git)) = git else {
+            return String::new();
+        };
+        let mut s = vec![git.commit_short_id.clone()];
+        if git.dirty {
+            s.push(".+".to_string());
+        }
+
+        if let Some(branch) = &git.branch {
+            s.push(format!(" ({branch})"));
+        }
+        s.join("")
+    }
+    let bi = bi();
+
+    format!("{}-{}", bi.crate_info.version, commit(&bi.version_control)).to_string()
+}