build: examples run independently & sysaudio examples renamed as tests

examples/core/triangle/main.zig

@@ -1,24 +0,0 @@
-const std = @import("std");
-const mach = @import("mach");
-
-// The global list of Mach modules our application may use.
-pub const modules = .{
-    mach.Core,
-    @import("App.zig"),
-};
-
-// TODO: move this to a mach "entrypoint" zig module which handles nuances like WASM requires.
-pub fn main() !void {
-    const allocator = std.heap.c_allocator;
-
-    // Initialize module system
-    try mach.mods.init(allocator);
-
-    // Schedule .app.start to run.
-    mach.mods.schedule(.app, .start);
-
-    // Dispatch systems forever or until there are none left to dispatch. If your app uses mach.Core
-    // then this will block forever and never return.
-    const stack_space = try allocator.alloc(u8, 8 * 1024 * 1024);
-    try mach.mods.dispatch(stack_space, .{});
-}