inflate: use custom Writer

[folkertdev]

another small step, which in my machine reaches parity with zlib-ng and zlib-chromium

Benchmark 1 (156 runs): ./uncompress-baseline rs silesia-small.tar.gz
  measurement          mean ± σ            min … max           outliers         delta
  wall_time          32.1ms ±  347us    31.3ms … 33.3ms          2 ( 1%)        0%
  peak_rss           24.1MB ± 57.9KB    24.0MB … 24.1MB          0 ( 0%)        0%
  cpu_cycles         92.6M  ±  475K     92.2M  … 95.9M          16 (10%)        0%
  instructions        291M  ±  334       291M  …  291M           3 ( 2%)        0%
  cache_references   2.13M  ± 25.3K     2.09M  … 2.24M           1 ( 1%)        0%
  cache_misses       45.2K  ± 2.40K     38.4K  … 52.8K           8 ( 5%)        0%
  branch_misses       953K  ± 1.01K      951K  …  959K           9 ( 6%)        0%
Benchmark 2 (158 runs): ./target/release/examples/blogpost-uncompress rs silesia-small.tar.gz
  measurement          mean ± σ            min … max           outliers         delta
  wall_time          31.6ms ±  322us    30.8ms … 32.7ms          1 ( 1%)        ⚡-  1.5% ±  0.2%
  peak_rss           24.1MB ± 64.9KB    23.9MB … 24.1MB          0 ( 0%)          -  0.1% ±  0.1%
  cpu_cycles         90.9M  ±  385K     90.5M  … 93.1M          11 ( 7%)        ⚡-  1.9% ±  0.1%
  instructions        279M  ±  275       279M  …  279M           0 ( 0%)        ⚡-  4.0% ±  0.0%
  cache_references   2.10M  ± 21.4K     2.06M  … 2.18M           2 ( 1%)        ⚡-  1.6% ±  0.2%
  cache_misses       33.4K  ± 2.22K     29.0K  … 46.8K           2 ( 1%)        ⚡- 26.2% ±  1.1%
  branch_misses       953K  ±  598       952K  …  957K           4 ( 3%)          -  0.0% ±  0.0%