refactor: get zine watcher to build in flow

src/watcher/root.zig

@@ -1,8 +1,47 @@
 const builtin = @import("builtin");
 
 pub const Watcher = switch (builtin.target.os.tag) {
-    .linux => @import("serve/watcher/LinuxWatcher.zig"),
-    .macos => @import("serve/watcher/MacosWatcher.zig"),
-    .windows => @import("serve/watcher/WindowsWatcher.zig"),
+    .linux => @import("LinuxWatcher.zig"),
+    .macos => @import("MacosWatcher.zig"),
+    .windows => @import("WindowsWatcher.zig"),
     else => @compileError("unsupported platform"),
 };
+
+pub const Debouncer = @import("Debouncer.zig");
+
+pub const Error = error{
+    OutOfMemory,
+    SystemResources,
+    Unexpected,
+    ProcessFdQuotaExceeded,
+    SystemFdQuotaExceeded,
+    LockedMemoryLimitExceeded,
+    ThreadQuotaExceeded,
+    IsDir,
+    WouldBlock,
+    AccessDenied,
+    ProcessNotFound,
+    PermissionDenied,
+    FileTooBig,
+    NoSpaceLeft,
+    DeviceBusy,
+    NoDevice,
+    SharingViolation,
+    PathAlreadyExists,
+    FileNotFound,
+    PipeBusy,
+    NameTooLong,
+    InvalidUtf8,
+    InvalidWtf8,
+    BadPathName,
+    NetworkNotFound,
+    AntivirusInterference,
+    SymLinkLoop,
+    NotDir,
+    FileLocksNotSupported,
+    FileBusy,
+    UserResourceLimitReached,
+    WatchAlreadyExists,
+    InvalidHandle,
+    QueueFailed,
+};