_demo/empty exports Reset_Handler and handleHardFault (to compatible with tinygo)

_demo/empty/C/c.go

@@ -0,0 +1,9 @@
+package C
+
+func XhandleHardFault() {
+
+}
+
+func Reset_Handler() {
+
+}

_demo/empty/empty.go

@@ -1,4 +1,6 @@
 package main
 
+import _ "github.com/goplus/llgo/_demo/empty/C"
+
 func main() {
 }