tests: rename files (00x-*.t is basic stuff, >=100-*.t are tests using IPC)

testcases/t/000-load-deps.t

@@ -0,0 +1,10 @@
+#!perl
+
+use Test::More tests => 2;
+
+BEGIN {
+	use_ok( 'X11::XCB::Connection' );
+	use_ok( 'X11::XCB::Window' );
+}
+
+diag( "Testing i3, Perl $], $^X" );