Rename project from nginx-test to sqlite-serve

- Updated package name in Cargo.toml: nginx-test → sqlite-serve
- Updated library name: libnginx_test.dylib → libsqlite_serve.dylib
- Updated all load_module directives in nginx configs
- Updated build checks in start scripts
- Updated branding in footer template
- Updated project name in all README files

The name 'sqlite-serve' better reflects the module's purpose:
serving dynamic content from SQLite databases via NGINX.

conf/book_catalog.conf

@@ -1,7 +1,7 @@
 # Book Catalog Configuration
-# Demonstrates the nginx-test SQLite module with multiple locations and template inheritance
+# Demonstrates the sqlite-serve module with multiple locations and template inheritance
 
-load_module target/debug/libnginx_test.dylib;
+load_module target/debug/libsqlite_serve.dylib;
 
 worker_processes 1;
 events {}

conf/book_detail.conf

@@ -1,7 +1,7 @@
 # Book Detail Configuration
 # Demonstrates using path parameters with the SQLite module
 
-load_module target/debug/libnginx_test.dylib;
+load_module target/debug/libsqlite_serve.dylib;
 
 worker_processes 1;
 events {}

conf/howto.conf

@@ -1,5 +1,5 @@
 # Add the path to your library here.
-load_module target/debug/libnginx_test.dylib;
+load_module target/debug/libsqlite_serve.dylib;
 
 worker_processes 1;