feat: Refactor html extractor to two stages

[e06084]

Thanks for your contribution and we appreciate it a lot. The following instructions would make your pull request more healthy and more easily get feedback. If you do not understand some items, don't worry, just make the pull request and seek help from maintainers.

Motivation

Please describe the motivation of this PR and the goal you want to achieve through this PR.

Modification

html抽取拆为2个阶段：

BC-breaking (Optional)

Does the modification introduce changes that break the backward compatibility of the downstream repositories?
If so, please describe how it breaks the compatibility and how the downstream projects should modify their code to keep compatibility with this PR.

Use cases (Optional)

If this PR introduces a new feature, it is better to list some use cases here and update the documentation.

Checklist

Before PR:

• Pre-commit or other linting tools are used to fix the potential lint issues.
• Bug fixes are fully covered by unit tests, the case that causes the bug should be added in the unit tests.
• The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
• The documentation has been modified accordingly, like docstring or example tutorials.

After PR:

• If the modification has potential influence on downstream or other related projects, this PR should be tested with those projects.
• CLA has been signed and all committers have signed the CLA in this PR.

[codecov]

Codecov Report

❌ Patch coverage is 89.13043% with 20 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
llm_web_kit/simple.py	82.81%	11 Missing ⚠️
llm_web_kit/exception/exception.py	73.33%	4 Missing ⚠️
llm_web_kit/extractor/html/main_html_parser.py	97.14%	2 Missing ⚠️
llm_web_kit/extractor/html/pre_extractor.py	81.81%	2 Missing ⚠️
llm_web_kit/extractor/html/extractor.py	83.33%	1 Missing ⚠️

@@            Coverage Diff             @@
##              dev     #521      +/-   ##
==========================================
- Coverage   90.96%   90.92%   -0.05%     
==========================================
  Files         102      103       +1     
  Lines        8866     8965      +99     
==========================================
+ Hits         8065     8151      +86     
- Misses        801      814      +13     

Files with missing lines	Coverage Δ
llm_web_kit/extractor/extractor_chain.py	98.88% <100.00%> (+0.13%)	⬆️
llm_web_kit/input/datajson.py	84.77% <100.00%> (+0.07%)	⬆️
llm_web_kit/libs/html_utils.py	94.24% <100.00%> (ø)
llm_web_kit/tools/cli.py	90.47% <100.00%> (-0.64%)	⬇️
llm_web_kit/extractor/html/extractor.py	92.25% <83.33%> (-1.30%)	⬇️
llm_web_kit/extractor/html/main_html_parser.py	97.14% <97.14%> (ø)
llm_web_kit/extractor/html/pre_extractor.py	94.39% <81.81%> (-0.92%)	⬇️
llm_web_kit/exception/exception.py	82.18% <73.33%> (-0.44%)	⬇️
llm_web_kit/simple.py	85.33% <82.81%> (-11.50%)	⬇️

... and 9 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.