utilize odin test -all-packages instead of (make/bat) scripts for running tests

tests/core/net/test_core_net.odin

@@ -8,6 +8,7 @@
 
 	A test suite for `core:net`
 */
+//+build !netbsd
 package test_core_net
 
 import "core:testing"
@@ -552,4 +553,4 @@ binstr_to_address :: proc(t: ^testing.T, binstr: string) -> (address: net.Addres
 		return nil
 	}
 	panic("Invalid test case")
-}
+}