feat(templates): python helm vite - #32

`helm dependency update` vendors a chart's dependencies as tarballs into
its `charts/` directory. Only the tarballs are named: git does not
descend into an ignored directory, so a bare `charts/` would hide the
charts themselves.

`**/charts/` rather than `charts/` because a chart repository keeps each
chart in `charts/<name>/`, one level deeper than a repo shipping a single
chart at its root. A chart built with `helm package` is not covered — it
lands as `*.tgz`, which `node@v1` already owns.

The two lines a `create-vue` scaffold carries that `node` does not
already have, in the scaffold's own spelling, so a fresh one is absorbed
instead of reported as equivalent spellings. The fixture shows a whole
scaffold file collapsing into the region.

Named after the build tool rather than Vue, the same reason the JVM
stack is `gradle` and not `java`: a Vue repo on another bundler has
neither line.

python no longer descends into docs/, where Read the Docs, MkDocs and
Sphinx keep build requirements in repos with no Python of their own.
vite only counts beside an index.html, so a library or CLI built with
Vite is not offered lines that point at nothing.

… rule