Validate aliases, addresses and phone numbers in the send menu (#176)

- Update the phone number regex
- Check whether the recipient is a valid phone number, alias or address

Reviewed-on: urdt/ussd#176
Co-authored-by: alfred-mk <alfredmwaik@gmail.com>
Co-committed-by: alfred-mk <alfredmwaik@gmail.com>

internal/testutil/mocks/servicemock.go

@@ -47,3 +47,8 @@ func (m *MockAccountService) TokenTransfer(ctx context.Context, amount, from, to
 	args := m.Called()
 	return args.Get(0).(*models.TokenTransferResponse), args.Error(1)
 }
+
+func (m *MockAccountService) CheckAliasAddress(ctx context.Context, alias string) (*dataserviceapi.AliasAddress, error) {
+	args := m.Called()
+	return args.Get(0).(*dataserviceapi.AliasAddress), args.Error(1)
+}

internal/testutil/testservice/TestAccountService.go

@@ -33,8 +33,8 @@ func (tas *TestAccountService) TrackAccountStatus(ctx context.Context, publicKey
 }
 
 func (tas *TestAccountService) FetchVouchers(ctx context.Context, publicKey string) ([]dataserviceapi.TokenHoldings, error) {
-	return []dataserviceapi.TokenHoldings {
-		dataserviceapi.TokenHoldings {
+	return []dataserviceapi.TokenHoldings{
+		dataserviceapi.TokenHoldings{
 			ContractAddress: "0x6CC75A06ac72eB4Db2eE22F781F5D100d8ec03ee",
 			TokenSymbol:     "SRF",
 			TokenDecimals:   "6",
@@ -56,3 +56,7 @@ func (tas *TestAccountService) TokenTransfer(ctx context.Context, amount, from,
 		TrackingId: "e034d147-747d-42ea-928d-b5a7cb3426af",
 	}, nil
 }
+
+func (m TestAccountService) CheckAliasAddress(ctx context.Context, alias string) (*dataserviceapi.AliasAddress, error) {
+	return &dataserviceapi.AliasAddress{}, nil
+}