[CMake] Fix build with SwiftTesting_BuildMacrosAsExecutables option set

There were two issues:
- typo -load-plugin-exectuable -> -load-plugin-executable
- The executable target for TestingMacros was not installed

Resolves #644

Author: ADKaster

Sources/CMakeLists.txt

@@ -97,7 +97,7 @@ elseif(SwiftTesting_MACRO_PATH)
     add_compile_options("$<$<COMPILE_LANGUAGE:Swift>:SHELL:-load-plugin-library ${SwiftTesting_MACRO_PATH}>")
   else()
     message(STATUS "TestingMacros: ${SwiftTesting_MACRO_PATH} (executable)")
-    add_compile_options("$<$<COMPILE_LANGUAGE:Swift>:SHELL:-load-plugin-exectuable ${SwiftTesting_MACRO_PATH}#TestingMacros>")
+    add_compile_options("$<$<COMPILE_LANGUAGE:Swift>:SHELL:-load-plugin-executable ${SwiftTesting_MACRO_PATH}#TestingMacros>")
   endif()
 endif()
 

Sources/TestingMacros/CMakeLists.txt

@@ -56,6 +56,9 @@ if(SwiftTesting_BuildMacrosAsExecutables)
 
   # Include the .swift file which contains its `@main` entry point type.
   target_compile_definitions(TestingMacros PRIVATE SWT_NO_LIBRARY_MACRO_PLUGINS)
+
+  install(TARGETS TestingMacros
+    RUNTIME DESTINATION bin)
 else()
   add_library(TestingMacros SHARED)