feat: add __SLIDEV_FEATURE_TWOSLASH_AUTOSHOW__ to shim.d.ts

Author: elecmonkey

shim.d.ts

@@ -3,6 +3,7 @@ declare global {
   const __DEV__: boolean
   const __SLIDEV_HASH_ROUTE__: boolean
   const __SLIDEV_CLIENT_ROOT__: string
+  const __SLIDEV_FEATURE_TWOSLASH_AUTOSHOW__: boolean
   const __SLIDEV_FEATURE_DRAWINGS__: boolean
   const __SLIDEV_FEATURE_DRAWINGS_PERSIST__: boolean
   const __SLIDEV_FEATURE_EDITOR__: boolean
@@ -19,6 +20,7 @@ declare module '@vue/runtime-core' {
     __DEV__: boolean
     __SLIDEV_HASH_ROUTE__: boolean
     __SLIDEV_CLIENT_ROOT__: string
+    __SLIDEV_FEATURE_TWOSLASH_AUTOSHOW__: boolean
     __SLIDEV_FEATURE_DRAWINGS__: boolean
     __SLIDEV_FEATURE_DRAWINGS_PERSIST__: boolean
     __SLIDEV_FEATURE_EDITOR__: boolean