feat(journal): update week 3

journal/week3.typ

@@ -0,0 +1,26 @@
+#import "template.typ": week, day
+
+#show: week.with(num: 3)
+
+#day(1)
+
+- Work on Python parser (expressions, assignments, calls, etc.)
+- Read TAPL (3, 5)
+
+#day(2)
+
+- Weekly meeting
+- Explore lambda-calculus rules definition
+- Read TAPL (5, 8, 9)
+- Start setuping checker
+
+#day(3)
+
+- Read TAPL (4, 6, 7, 10)
+- Define general architecture
+- Setup checker
+
+#day(4)
+
+- Read TAPL (11)
+- Implement checker base