feat(rust): implement sled support

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

rust/sled/sled.go

@@ -0,0 +1,35 @@
+package sled
+
+import "github.com/goplus/llgo/c"
+
+// Write the .pc file for the dylib generated by the Rust library and copy it to pkg-config for proper location.
+const (
+	LLGoPackage = "link: $(pkg-config --libs sled); -lsled"
+)
+
+type SledConfig struct {
+	Unused [8]byte
+}
+
+type SledDb struct {
+	Unused [8]byte
+}
+
+//llgo:link (*SledConfig).SetPath C.sled_config_set_path
+func (conf *SledConfig) SetPath(char *c.Char) *SledConfig {
+	return nil
+}
+
+//llgo:link (*SledConfig).OpenDB C.sled_open_db
+func (conf *SledConfig) OpenDB(sledConfig *SledConfig) *SledDb {
+	return nil
+}
+
+//llgo:link (*SledDb).Set C.sled_set
+func (db *SledDb) Set(key *c.Char, keyLen c.Ulong, value *c.Char, valueLen c.Ulong) {
+}
+
+//llgo:link (*SledDb).Get C.sled_get
+func (db *SledDb) Get(key *c.Char, keyLen c.Ulong) *c.Char {
+	return nil
+}