Rename to CE-modern, a 1.7.10 port of CE

Position this mod as a port of CE instead of BCx.

- Rename the mod to CE-modern (modid cemodern) and the package to
  net.kanawo.cemodern; the main class is now CEModern.
- Move assets to assets/cemodern and rename the lang key and EMC save
  data to match.
- Describe the mod as a port of CE in the README and mcmod.info.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/main/java/net/kanawo/cemodern/block/SchematicEMCBuilder.java

@@ -0,0 +1,22 @@
+package net.kanawo.cemodern.block;
+
+import net.kanawo.cemodern.tile.TileEMCBuilder;
+
+import buildcraft.builders.schematics.SchematicBuilderLike;
+
+/**
+ * Blueprint schematic that, like the Builder's, drops the build state, and also drops the owner, so a copy built by
+ * someone else does not draw on the original owner's EMC.
+ */
+public class SchematicEMCBuilder extends SchematicBuilderLike {
+
+    @Override
+    public void onNBTLoaded() {
+        super.onNBTLoaded();
+
+        if (tileNBT != null) {
+            tileNBT.removeTag(TileEMCBuilder.OWNER_MOST);
+            tileNBT.removeTag(TileEMCBuilder.OWNER_LEAST);
+        }
+    }
+}