Fixed from address for call options

`from` address for Call Options for contract binding should be set to
the address of the signer, not address of the contract that is
destination of the call.

Author: nkuba

tools/generators/ethereum/contract.go.tmpl

@@ -45,8 +45,9 @@ func New{{.Class}}(
     transactionMutex *sync.Mutex,
 ) (*{{.Class}}, error) {
 	callerOptions := &bind.CallOpts{
-		From: contractAddress,
+		From: accountKey.Address,
 	}
+
 	transactorOptions := bind.NewKeyedTransactor(
 		accountKey.PrivateKey,
 	)

tools/generators/ethereum/contract_template_content.go

@@ -48,8 +48,9 @@ func New{{.Class}}(
     transactionMutex *sync.Mutex,
 ) (*{{.Class}}, error) {
 	callerOptions := &bind.CallOpts{
-		From: contractAddress,
+		From: accountKey.Address,
 	}
+
 	transactorOptions := bind.NewKeyedTransactor(
 		accountKey.PrivateKey,
 	)