Move config-related skyfunctions and values to a new package.

This is to prepare for future refactorings.

PiperOrigin-RevId: 570068005
Change-Id: I7e1137d524ab80cfbd947f7341bb8cf74a9e1736
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/ActionTemplateExpansionValue.java b/src/main/java/com/google/devtools/build/lib/skyframe/ActionTemplateExpansionValue.java
index d7b4b28..a80ba14 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/ActionTemplateExpansionValue.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/ActionTemplateExpansionValue.java
@@ -22,6 +22,7 @@
 import com.google.devtools.build.lib.actions.BasicActionLookupValue;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.concurrent.BlazeInterners;
+import com.google.devtools.build.lib.skyframe.config.BuildConfigurationKey;
 import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec;
 import com.google.devtools.build.skyframe.SkyFunctionName;