create structure-mutator module

common/addons/structure-mutator/build.gradle.kts

@@ -0,0 +1,5 @@
+version = version("0.1.0")
+
+dependencies {
+    shadedApi(project(":common:addons:manifest-addon-loader"))
+}

common/addons/structure-mutator/src/main/resources/terra.addon.yml

@@ -0,0 +1,11 @@
+schema-version: 1
+contributors:
+  - Terra contributors
+id: structure-mutator
+version: @VERSION@
+entrypoints: []
+website:
+  issues: https://github.com/PolyhedralDev/Terra/issues
+  source: https://github.com/PolyhedralDev/Terra
+  docs: https://github.com/PolyhedralDev/Terra/wiki
+license: MIT License