Add the ability to use local optimization_config

[mu-hun]

Adds support for downloading and reusing the optimization config locally, allowing users to review the optimization results before deploying changes to the server.

This feature should be managed through the build option in the FiltersRegistry, not by FiltersCompiler.

The workflow

• percent.json is stored in temp/optimization_config/ and read from there when --use-cache is enabled.
• After downloading optimization_config/percent.json, edit it locally, then use it in the build.

Both --generate-cache and --use-cache flags now include optimization config handling alongside the existing filter source caching.

Note to @adguard/filters-compiler

@adguard/filters-compiler is set to AdguardTeam/FiltersCompiler#local_optimization_config in package.json.

This requires dist/ to be committed to the branch, as GitHub shorthand installation does not trigger a build step.

[mu-hun]

Please specify how to perform the test.

I have just aligned with the flags you created (#1181). In the PR description,

Both --generate-cache and --use-cache flags now include optimization config handling alongside the existing filter source caching.

[mu-hun]

Crash fixed

7691c68. The cache dir is wiped with force: true before generate() runs, so re-running on an existing cache no longer errors.

Verification guideline (Draft)

I tested the steps below, but the result had no output. Maybe I wrote the steps incorrectly or missed something.

1. Run yarn generate-cache — downloads remote config to temp/optimization_config/
2. Confirm log output: Using local optimization config from: …/temp/optimization_config
3. In temp/optimization_config/filters/1/stats.json, set one rule hit count at 9999 (e.g. "||banggood.com^$domain=topic.lt": 9999 from 0 in groups[0].rules)
4. Run yarn build:local
5. Confirm log output again (proves local config is active)
6. Grep compiled output for the rule:

If step 6 returns output, the stats cache is wired correctly end-to-end:

grep -rF "||banggood.com^$domain=topic.lt" platforms/
# → prints matching lines with file paths

After restoring the hit count and running yarn build:local again, the result is no output:

# Rule is absent (before change hit count to 9999) — cache working correctly:
grep -rF "||banggood.com^$domain=topic.lt" platforms/
# → no output