Fix the CMake configuration for Microphone Gem (#1835)

* Fix the CMake configuration for Microphone Gem

The configuration was causing AudioSystem Gem to be loaded at runtime
regardless of whehter AudioSystem.Editor Gem was set to get loaded as
well.  Gives Microphone Gem an Editor module to sort out the proper
runtime dependencies.

Signed-off-by: amzn-phist <52085794+amzn-phist@users.noreply.github.com>

* Removes an unnecessary comment

Signed-off-by: amzn-phist <52085794+amzn-phist@users.noreply.github.com>

* Fix platforms that don't build tools

Signed-off-by: amzn-phist <52085794+amzn-phist@users.noreply.github.com>

* Use aliases to better express runtime depends

Cleans it up and removes the need for a Microphone.Editor module.

Signed-off-by: amzn-phist <52085794+amzn-phist@users.noreply.github.com>

Gems/Microphone/Code/CMakeLists.txt

@@ -22,7 +22,7 @@ ly_add_target(
             Source
     BUILD_DEPENDENCIES
         PRIVATE
-            Gem::AudioSystem
+            Gem::AudioSystem.Static
         PUBLIC
             3rdParty::libsamplerate
             Legacy::CryCommon
@@ -39,10 +39,7 @@ ly_add_target(
     BUILD_DEPENDENCIES
         PRIVATE
             Gem::Microphone.Static
-    RUNTIME_DEPENDENCIES
-        Gem::AudioSystem
 )
 
-# The above "Microphone" target is used by all interactive applications
-ly_create_alias(NAME Microphone.Clients  NAMESPACE Gem TARGETS Gem::Microphone)
-ly_create_alias(NAME Microphone.Tools    NAMESPACE Gem TARGETS Gem::Microphone)
+ly_create_alias(NAME Microphone.Clients  NAMESPACE Gem TARGETS Gem::Microphone Gem::AudioSystem)
+ly_create_alias(NAME Microphone.Tools    NAMESPACE Gem TARGETS Gem::Microphone Gem::AudioSystem.Editor)