Tantivy quickwit (#1293)

* Added sstable and enabling it by default, and parallel boolean query.
* Added async API for FileSlice.
* Added async get_doc
* Reduce blocksize to 32_000
* Added debug logs

Quickwit specific feature a hidden behind the quickwit feature flag.

.github/workflows/test.yml

@@ -24,16 +24,23 @@ jobs:
             toolchain: nightly
             override: true
             components: rustfmt
+
     - name: Install latest nightly to test also against unstable feature flag
       uses: actions-rs/toolchain@v1
       with:
             toolchain: stable
             override: true
             components: rustfmt, clippy
+
     - name: Run tests
       run: cargo +stable test --features mmap,brotli-compression,lz4-compression,snappy-compression,failpoints --verbose --workspace
+
+    - name: Run tests quickwit feature
+      run: cargo +stable test --features mmap,quickwit,failpoints --verbose --workspace
+
     - name: Check Formatting
       run: cargo +nightly fmt --all -- --check
+
     - uses: actions-rs/clippy-check@v1
       with:
         toolchain: stable