protos: move the transaction fee out of the transaction body and into…

… the transaction parameters, add TransactionParamsView

proto/penumbra/penumbra/core/transaction/v1alpha1/transaction.proto

@@ -35,12 +35,10 @@ message TransactionBody {
   repeated Action actions = 1;
   // Parameters determining if a transaction should be accepted by this chain.
   TransactionParameters transaction_parameters = 2;
-  // The transaction fee.
-  component.fee.v1alpha1.Fee fee = 3;
   // Detection data for use with Fuzzy Message Detection
-  DetectionData detection_data = 4;
+  DetectionData detection_data = 3;
   // Sub-message containing memo ciphertext if a memo was added to the transaction.
-  MemoData memo_data = 5;
+  MemoData memo_data = 4;
 }
 
 // Represents the encrypted memo data.
@@ -59,6 +57,20 @@ message TransactionParameters {
   // The chain this transaction is intended for.  Including this prevents
   // replaying a transaction on one chain onto a different chain.
   string chain_id = 2;
+  // The transaction fee.
+  component.fee.v1alpha1.Value fee = 3;
+}
+
+message TransactionParamsView {
+  // The maximum height that this transaction can be included in the chain.
+  //
+  // If zero, there is no maximum.
+  uint64 expiry_height = 1;
+  // The chain this transaction is intended for.  Including this prevents
+  // replaying a transaction on one chain onto a different chain.
+  string chain_id = 2;
+  // The transaction fee.
+  component.fee.v1alpha1.ValueView fee = 3;
 }
 
 // Detection data used by a detection server performing Fuzzy Message Detection.
@@ -146,12 +158,10 @@ message TransactionView {
 }
 
 message TransactionBodyView {
-  // A list views into of actions (state changes) performed by this transaction.
+  // A list of views into of actions (state changes) performed by this transaction.
   repeated ActionView action_views = 1;
-  // Transaction parameters.
-  TransactionParameters transaction_parameters = 2;
-  // The transaction fee.
-  component.fee.v1alpha1.Fee fee = 3;
+  // View of the transaction parameters.
+  TransactionParamsView transaction_params_view = 2;
   // The detection data in this transaction, only populated if
   // there are outputs in the actions of this transaction.
   DetectionData detection_data = 4;