chore(integer): add getters to client keys

tfhe/src/integer/client_key/crt.rs

@@ -58,6 +58,10 @@ impl CrtClientKey {
     pub fn parameters(&self) -> crate::shortint::Parameters {
         self.key.parameters()
     }
+
+    pub fn moduli(&self) -> &[u64] {
+        self.moduli.as_slice()
+    }
 }
 
 impl From<(ClientKey, Vec<u64>)> for CrtClientKey {

tfhe/src/integer/client_key/radix.rs

@@ -69,6 +69,10 @@ impl RadixClientKey {
     pub fn decrypt_one_block(&self, ct: &ShortintCiphertext) -> u64 {
         self.key.decrypt_one_block(ct)
     }
+
+    pub fn num_blocks(&self) -> usize {
+        self.num_blocks
+    }
 }
 
 impl From<(ClientKey, usize)> for RadixClientKey {