include commit hash in SupportView

Signed-off-by: kernelkind <kernelkind@gmail.com>

build.rs

@@ -0,0 +1,10 @@
+use std::process::Command;
+
+fn main() {
+    if let Ok(output) = Command::new("git").args(["rev-parse", "HEAD"]).output() {
+        if output.status.success() {
+            let hash = String::from_utf8_lossy(&output.stdout);
+            println!("cargo:rustc-env=GIT_COMMIT_HASH={}", hash.trim());
+        }
+    }
+}