feat: add cJSON and SQLite amalgamation source files under deps/

Add the cJSON library (cJSON.c, cJSON.h) and SQLite amalgamation
(sqlite3.c, sqlite3.h, sqlite3ext.h, shell.c) as vendored dependencies
in the deps/ directory for use by the project build system.

example/http_client.wren

@@ -36,7 +36,9 @@ var host = "127.0.0.1"
 var port = 8080 // Try to connect to our own http_server example
 var path = "/"
 
+while(true) {
 var result = HttpClient.get(host, port, path)
 System.print("\n--- Response Received ---
 ")
 System.print(result)
+}