Move property file under coursier namespace

Should make it move along the rest when shading coursier

core/jvm/src/main/scala/coursier/util/Properties.scala

@@ -9,7 +9,7 @@ object Properties {
     p.load(
       getClass
         .getClassLoader
-        .getResourceAsStream("coursier.properties")
+        .getResourceAsStream("coursier/coursier.properties")
     )
     p
   }

project/Settings.scala

@@ -73,12 +73,12 @@ object Settings {
     resourceGenerators.in(Compile) += Def.task {
       import sys.process._
 
-      val dir = target.value
+      val dir = classDirectory.in(Compile).value / "coursier"
       val ver = version.value
   
       val f = dir / "coursier.properties"
       dir.mkdirs()
-  
+
       val p = new java.util.Properties
   
       p.setProperty("version", ver)

tests/jvm/src/test/scala/coursier/test/PropertiesTests.scala

@@ -0,0 +1,19 @@
+package coursier.test
+
+import coursier.util.Properties
+import utest._
+
+object PropertiesTests extends TestSuite {
+
+  val tests = TestSuite {
+
+    'version - {
+      assert(Properties.version.nonEmpty)
+    }
+
+    'commitHash - {
+      assert(Properties.commitHash.nonEmpty)
+    }
+  }
+
+}