build: streamline package discovery and bump to v0.4.243

- Replace explicit package listing with setuptools.find
- Include all crawl4ai.* packages automatically
- Use `packages = {find = {where = ["."], include = ["crawl4ai*"]}}` syntax
- Bump version to 0.4.243

This change simplifies package maintenance by automatically discovering
all subpackages under crawl4ai namespace instead of listing them manually.

crawl4ai/__version__.py

@@ -1,2 +1,2 @@
 # crawl4ai/_version.py
-__version__ = "0.4.242"
+__version__ = "0.4.243"

pyproject.toml

@@ -69,7 +69,7 @@ crawl4ai-doctor = "crawl4ai.install:doctor"
 crawl = "crawl4ai.cli:cli"
 
 [tool.setuptools]
-packages = ["crawl4ai", "crawl4ai.js_snippet"]
+packages = {find = {where = ["."], include = ["crawl4ai*"]}}
 
 [tool.setuptools.package-data]
 crawl4ai = ["js_snippet/*.js"]