feat: add foregin exprssions and vec3 functions

Cargo.lock

@@ -2,6 +2,12 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "as-any"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b8a30a44e99a1c83ccb2a6298c563c888952a1c9134953db26876528f84c93a"
+
 [[package]]
 name = "autocfg"
 version = "1.4.0"
@@ -125,6 +131,7 @@ checksum = "8e9489c2807c139ffd9c1794f4af0ebe86a828db53ecdc7fea2111d0fed085d1"
 name = "lispers"
 version = "0.1.0"
 dependencies = [
+ "as-any",
  "futures",
  "nix",
 ]