i-1: First draft of a shared KMP library (#2)

- [x] Exposes a `Greeting` class.
- [x] Exposes a `Greeting` class test.

Co-authored-by: Emil Simeonov <emil@theliberatededge.org>
Reviewed-on: emil/AstrologyLibrary#2

shared/build/kotlin/compileDebugKotlinAndroid/cacheable/caches-jvm/lookups/counters.tab

@@ -0,0 +1,2 @@
+3
+0