Introduce common service client

In preparation for making common service access information
such as the maximum request length or supported serializations,
a common service client has been introduced that standardizes
common client state, including any available service access
info.  All clients refactored to use the common service client.

Signed-off-by: Julian Hall <julian.hall@arm.com>
Change-Id: I31336901476f5647d2ed00294716940f475da08c
diff --git a/deployments/ts-demo/ts-demo.cmake b/deployments/ts-demo/ts-demo.cmake
index 05a9c9f..3231eb6 100644
--- a/deployments/ts-demo/ts-demo.cmake
+++ b/deployments/ts-demo/ts-demo.cmake
@@ -37,6 +37,8 @@
 	COMPONENTS
 		"components/app/ts-demo"
 		"components/common/tlv"
+		"components/service/common/include"
+		"components/service/common/client"
 		"components/service/crypto/client/cpp"
 		"components/service/crypto/client/cpp/packed-c"
 		"protocols/service/crypto/packed-c"