Initial commit: mod_reqin_log Apache module

Features:
- JSON logging of HTTP requests to Unix domain socket
- Configurable HTTP headers logging (flat JSON structure)
- Header value truncation and count limits
- Automatic reconnect on socket disconnection
- Error reporting with throttling

Configuration directives:
- JsonSockLogEnabled: Enable/disable logging
- JsonSockLogSocket: Unix socket path
- JsonSockLogHeaders: List of headers to log
- JsonSockLogMaxHeaders: Maximum headers to log
- JsonSockLogMaxHeaderValueLen: Max header value length
- JsonSockLogReconnectInterval: Reconnect delay
- JsonSockLogErrorReportInterval: Error log throttle

Includes:
- Module source code (src/)
- Unit and integration tests (tests/, scripts/)
- Documentation (README.md, architecture.yml)
- Build configuration (CMakeLists.txt, Makefile)
- Packaging (deb/rpm)

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

packaging/deb/rules

@@ -0,0 +1,24 @@
+#!/usr/bin/make -f
+
+%:
+	dh $@
+
+override_dh_auto_build:
+	$(MAKE) APXS=/usr/bin/apxs
+
+override_dh_auto_install:
+	$(MAKE) install DESTDIR=$(CURDIR)/debian/libapache2-mod-reqin-log APXS=/usr/bin/apxs
+	install -d $(CURDIR)/debian/libapache2-mod-reqin-log/etc/apache2/conf-available/
+	install -m 644 conf/mod_reqin_log.conf $(CURDIR)/debian/libapache2-mod-reqin-log/etc/apache2/conf-available/mod_reqin_log.conf
+
+override_dh_auto_clean:
+	$(MAKE) clean || true
+	dh_auto_clean
+
+override_dh_strip_nondeterminism:
+	# Nothing to strip
+
+override_dh_install:
+	dh_install
+	install -d $(CURDIR)/debian/libapache2-mod-reqin-log/usr/lib/apache2/modules/
+	install -m 755 .libs/mod_reqin_log.so $(CURDIR)/debian/libapache2-mod-reqin-log/usr/lib/apache2/modules/