ci: only run what a change affects, consolidate jobs (#3674)

* ci: only run what a change affects, consolidate jobs

- detect affected plugins from changed files and Cargo.lock dependency trees
- test/lint Rust per platform in shards instead of one job per plugin
- fold check-generated-files into lint-javascript, fmt into a single job
- skip fat LTO in integration test builds, single ABI in test-android

* ci: run e2e on bumps, use published tauri CLI, PR-safe pnpm cache

- trigger e2e on Cargo/pnpm lockfile and manifest changes
- install the latest 2.x tauri-cli with cargo-binstall in integration tests
- add setup-pnpm action: restore the store everywhere, save only on v2/v3

* fix clippy, ios build

* fix bumps [skip ci]

.github/workflows/audit-javascript.yml

@@ -38,12 +38,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
-      - uses: actions/setup-node@v7
-        with:
-          node-version: 'lts/*'
-      - uses: pnpm/action-setup@v6
-        with:
-          run_install: true
-          cache: true # the pnpm store, keyed by OS and lockfile hash and shared by every workflow
+      - uses: ./.github/actions/setup-pnpm
       - name: audit
         run: pnpm audit