Add nockma as a valid target for the tree compile command (#2630)

This allows us to do `juvix dev tree compile --target nockma test.jvt`.
The pipeline was already implemented, this pr only adds the
`TargetNockma` to the list of supported backends so that the cli
recognizes it.

app/Commands/Dev/Tree/Compile/Options.hs

@@ -12,7 +12,8 @@ treeSupportedTargets =
   nonEmpty'
     [ TargetWasm32Wasi,
       TargetNative64,
-      TargetAsm
+      TargetAsm,
+      TargetNockma
     ]
 
 parseTreeCompileOptions :: Parser CompileOptions