feat: add torus-client pallet (#129)

This pull request adds the torus-client `client/` to the repo complete
with examples and readme.

---------

Co-authored-by: Kelvin Steiner <[email protected]>
Co-authored-by: Luiz Carvalho <[email protected]>

Author: 3 people

.gitignore

@@ -15,7 +15,7 @@
 /docker/volumes/
 
 # Rust
-/target/
+**/target/
 
 # Git Hooks
 .pre-commit-config.yaml

.vscode/settings.json

@@ -19,12 +19,16 @@
   "cSpell.words": [
     "alice",
     "buildx",
+    "codegen",
     "devcontainers",
     "extrinsics",
     "irongut",
     "jwalton",
     "mainnet",
+    "nocapture",
     "presign",
+    "println",
+    "subxt",
     "Swatinem",
     "wbuild"
   ]