Lots more updates

Also begin adding rust building capabilities
to be able to write rust binaries for some commands.

rust/lib/common/src/base64.rs

@@ -0,0 +1,5 @@
+use base64::Engine;
+
+pub fn encode(bytes: &[u8]) -> String {
+    base64::prelude::BASE64_STANDARD.encode(bytes)
+}