There is a speed up in 0.5s but it is still 4.4s, so something else is
slow there.
Benchmarking bundle/templates/experimental-jobs-as-code:
```
# Without UV_CACHE_DIR
~/work/cli/acceptance/bundle/templates/experimental-jobs-as-code % hyperfine --warmup 2 'testme -count=1'
Benchmark 1: testme -count=1
Time (mean ± σ): 4.950 s ± 0.079 s [User: 2.730 s, System: 8.524 s]
Range (min … max): 4.838 s … 5.076 s 10 runs
# With UV_CACHE_DIR
~/work/cli/acceptance/bundle/templates/experimental-jobs-as-code % hyperfine --warmup 2 'testme -count=1'
Benchmark 1: testme -count=1
Time (mean ± σ): 4.410 s ± 0.049 s [User: 2.669 s, System: 8.710 s]
Range (min … max): 4.324 s … 4.467 s 10 runs
```
## Changes
Add experimental-jobs-as-code template allowing defining jobs using
Python instead of YAML through the `databricks-bundles` PyPI package.
## Tests
Manually and acceptance tests.
## Changes
Include a materialized copy of built-in templates as reference output.
This updates the output comparison logic to work against an output
directory. The `doComparison` function now always works on real files.
It can now tell apart non-existing files and empty files (e.g., the
`.gitkeep` files in templates).
Denis Bilenko
Gleb Kanterov
Pieter Noordhuis