set main class of cli implementation

platforms/cli/build.gradle.kts

@@ -12,4 +12,13 @@ dependencies {
     shadedImplementation("ch.qos.logback:logback-classic:1.2.7")
     
     shadedImplementation("net.jafama", "jafama", Versions.Libraries.Internal.jafama)
+}
+
+tasks.withType<Jar>() {
+    entryCompression = ZipEntryCompression.STORED
+    manifest {
+        attributes(
+            "Main-Class" to "com.dfsek.terra.cli.TerraCLI",
+                  )
+    }
 }