cmake: add missing fmt include

CMakeLists.txt

@@ -57,6 +57,7 @@ find_package(OpenSSL 1.0.0 REQUIRED)
 find_package(CURL 7.29 REQUIRED)
 find_package(Criterion)
 find_package(spdlog REQUIRED)
+find_package(fmt REQUIRED)
 
 pkg_check_modules(JANSSON IMPORTED_TARGET REQUIRED jansson>=2.7)
 pkg_check_modules(LIBCONFIG IMPORTED_TARGET libconfig>=1.4.9)

lib/CMakeLists.txt

@@ -74,6 +74,7 @@ target_link_libraries(villas-common PUBLIC
 	${CURL_LIBRARIES}
 	${CMAKE_DL_LIBS}
 	spdlog::spdlog
+	fmt::fmt
 	stdc++
 )