Add multilingual language and systems learning tracks

tl/expanded-23-2/README.md

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+# Bumuo ng Open Agila OS · 2
+
+[Agila University track](https://edu.agilaos.com/track.php?track=23&lang=tl)
+
+Mga 15 minuto bawat aralin. Hulaan, patakbuhin, baguhin, ipaliwanag, at sagutan ang pagsusulit sa University.
+
+- [Lesson 1: Scheduler na may nasusuring ayos](lesson-1/lesson.html)
+- [Lesson 2: Interrupt at hangganan ng driver](lesson-2/lesson.html)
+- [Lesson 3: Mula host prototype tungo sa bootable system](lesson-3/lesson.html)