feat(c/libuv): Implement thread related funcs

Signed-off-by: hackerchai <i@hackerchai.com>

c/libuv/thread.go

@@ -0,0 +1,80 @@
+package libuv
+
+import (
+	_ "unsafe"
+
+	"github.com/goplus/llgo/c"
+)
+
+type Thread struct {
+	Unused [8]byte
+}
+
+type ThreadOptions struct {
+	flags     c.Uint
+	stackSize uintptr
+}
+
+type Work struct {
+	Unused [128]byte
+}
+
+// ----------------------------------------------
+
+/* Function type */
+
+// llgo:type C
+type ThreadCb func(arg c.Pointer)
+
+//llgo:type C
+type WorkCb func(req *Work)
+
+//llgo:type C
+type AfterWorkCb func(req *Work, status c.Int)
+
+// ----------------------------------------------
+
+/* Thread related functions and method. */
+
+//go:linkname ThreadEqual C.uv_thread_equal
+func ThreadEqual(t1 *Thread, t2 *Thread) c.Int
+
+//go:linkname ThreadGetCPU C.uv_thread_getcpu
+func ThreadGetCPU() c.Int
+
+//go:linkname ThreadSelf C.uv_thread_self
+func ThreadSelf() Thread
+
+// llgo:link (*Thread).Create C.uv_thread_create
+func (t *Thread) Create(entry ThreadCb, arg c.Pointer) c.Int {
+	return 0
+}
+
+// llgo:link (*Thread).CreateEx C.uv_thread_create_ex
+func (t *Thread) CreateEx(entry ThreadCb, params *ThreadOptions, arg c.Pointer) c.Int {
+	return 0
+}
+
+// llgo:link (*Thread).Join C.uv_thread_join
+func (t *Thread) Join() c.Int {
+	return 0
+}
+
+// llgo:link (*Thread).SetAffinity C.uv_thread_set_affinity
+func (t *Thread) SetAffinity(cpuMask *c.Char, oldMask *c.Char, maskSize uintptr) c.Int {
+	return 0
+}
+
+// llgo:link (*Thread).GetAffinity C.uv_thread_get_affinity
+func (t *Thread) GetAffinity(cpuMask *c.Char, maskSize uintptr) c.Int {
+	return 0
+}
+
+// ----------------------------------------------
+
+/* Work related functions and method. */
+
+//go:linkname QueueWork C.uv_queue_work
+func QueueWork(loop *Loop, req *Work, workCb WorkCb, afterWorkCb AfterWorkCb) c.Int
+
+