[orx-delegate-magic, orx-envelopes] Add orx-delegate-magic, orx-envelopes

orx-delegate-magic/README.md

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+# orx-delegate magic
+
+Collection of magical property delegators
+
+## Delegated properties
+
+[Kotlin documentation](https://kotlinlang.org/docs/delegated-properties.html)
+
+## Property smoothing
+
+```kotlin
+val state = object {
+    var radius = 10.0
+}
+
+val smoothRadius by smoothing(state::radius)
+```
+
+
+## Property dynamics
+
+```kotlin
+val state = object {
+    var radius = 10.0
+}
+
+val dynamicRadius by springForcing(state::radius)
+```
+
+## Property tracking
+
+```kotlin
+val state = object {
+    var radius = 10.0
+}
+
+val radiusHistory by tracking(state::radius)
+```