Improve crash handling

This adds a crash handler which reports a crash (if telemetry is enabled). On a
crash, this looks for `curl` (using the PATH env), and forks the process to then
call execve. This relies on a new endpoint to be setup to accept the "report".
Also, we include very little data..I figured just knowing about crashes would
be a good place to start.

A panic handler is provided, which override's Zig default handler and hooks
into the crash handler.

An `assert` function is added and hooks into the crash handler. This is
currently only used in one place (Session.zig) to demonstrate its use. In
addition to reporting a failed assert, the assert aborts execution in
ReleaseFast (as opposed to an undefined behavior with std.debug.assert).

I want to hook this into the v8 global error handler, but only after direct_v8
is merged.

Much of this is inspired by bun's code. They have their own assert (1) and
a [more sophisticated] crashHandler (2).
:

(1) beccd01647/src/bun.zig (L2987)
(2) beccd01647/src/crash_handler.zig (L198)

src/telemetry/telemetry.zig

@@ -10,6 +10,10 @@ const Notification = @import("../Notification.zig");
 const uuidv4 = @import("../id.zig").uuidv4;
 const IID_FILE = "iid";
 
+pub fn isDisabled() bool {
+    return std.process.hasEnvVarConstant("LIGHTPANDA_DISABLE_TELEMETRY");
+}
+
 pub const Telemetry = TelemetryT(blk: {
     if (builtin.mode == .Debug or builtin.is_test) break :blk NoopProvider;
     break :blk @import("lightpanda.zig").LightPanda;
@@ -30,7 +34,7 @@ fn TelemetryT(comptime P: type) type {
         const Self = @This();
 
         pub fn init(app: *App, run_mode: App.RunMode) !Self {
-            const disabled = std.process.hasEnvVarConstant("LIGHTPANDA_DISABLE_TELEMETRY");
+            const disabled = isDisabled();
             if (builtin.mode != .Debug and builtin.is_test == false) {
                 log.info(.telemetry, "telemetry status", .{ .disabled = disabled });
             }