Release 0.1.4: add GitHub Release asset attachments

Pure tooling release on top of 0.1.3. The library code is unchanged;
only the release workflow grew a new github-release job that attaches
every built artefact to the GitHub Release page so users have direct
download links next to the source archives:

- Python wheels (5 platforms) + sdist
- Native Node bindings (linux-x64-gnu, darwin-x64, darwin-arm64, win32-x64-msvc)
- npm-pack tarballs for the main wickra package, every per-platform
  subpackage, and wickra-wasm
- Cargo .crate files for wickra-core, wickra-data, wickra

The job runs at the end of the release pipeline and also accepts
workflow_dispatch so future asset-only fixups don't require a version
bump.

Cargo.toml

@@ -11,7 +11,7 @@ members = [
 exclude = []
 
 [workspace.package]
-version = "0.1.3"
+version = "0.1.4"
 authors = ["Wickra Contributors"]
 edition = "2021"
 rust-version = "1.75"
@@ -23,7 +23,7 @@ keywords = ["finance", "trading", "indicators", "technical-analysis", "ta"]
 categories = ["finance", "mathematics", "science"]
 
 [workspace.dependencies]
-wickra-core = { path = "crates/wickra-core", version = "0.1.3" }
+wickra-core = { path = "crates/wickra-core", version = "0.1.4" }
 
 thiserror = "2"
 rayon = "1.10"