Support armv7 architecture for monero-wallet-rpc.

This allows us to run swap cli on a raspberry pi 4.

swap/src/monero/wallet_rpc.rs

@@ -20,9 +20,13 @@ compile_error!("unsupported operating system");
 #[cfg(target_os = "macos")]
 const DOWNLOAD_URL: &str = "http://downloads.getmonero.org/cli/monero-mac-x64-v0.17.2.0.tar.bz2";
 
-#[cfg(target_os = "linux")]
+#[cfg(all(target_os = "linux", target_arch = "x86_64"))]
 const DOWNLOAD_URL: &str = "https://downloads.getmonero.org/cli/monero-linux-x64-v0.17.2.0.tar.bz2";
 
+#[cfg(all(target_os = "linux", target_arch = "arm"))]
+const DOWNLOAD_URL: &str =
+    "https://downloads.getmonero.org/cli/monero-linux-armv7-v0.17.2.0.tar.bz2";
+
 #[cfg(target_os = "windows")]
 const DOWNLOAD_URL: &str = "https://downloads.getmonero.org/cli/monero-win-x64-v0.17.2.0.zip";