Add fmt 5.0.0

Author: AbrilRBS

etc/config/c++.amazon.properties

@@ -409,10 +409,12 @@ libs.cppcoro.versions.trunk.version=trunk
 libs.cppcoro.versions.trunk.path=/opt/compiler-explorer/libs/cppcoro/include
 libs.fmt.name={fmt}
 libs.fmt.description=A modern formatting library
-libs.fmt.versions=trunk:410:400
+libs.fmt.versions=trunk:500:410:400
 libs.fmt.url=http://fmtlib.net/
 libs.fmt.versions.trunk.version=trunk
 libs.fmt.versions.trunk.path=/opt/compiler-explorer/libs/fmt/trunk/include
+libs.fmt.versions.500.version=5.0.0
+libs.fmt.versions.500.path=/opt/compiler-explorer/libs/fmt/5.0.0/include
 libs.fmt.versions.410.version=4.1.0
 libs.fmt.versions.410.path=/opt/compiler-explorer/libs/fmt/4.1.0
 libs.fmt.versions.400.version=4.0.0