Introduce instruction::Target in test crate

examples/todos/Cargo.toml

@@ -6,6 +6,7 @@ edition = "2024"
 publish = false
 
 [features]
+default = ["tester"]
 test = ["iced/test"]
 tester = ["test", "iced/tester"]
 

examples/todos/tests/carl_sagan.ice

@@ -2,13 +2,11 @@ viewport: 512x768
 mode: impatient
 preset: Empty
 -----
-click left at (377.80, 236.50)
+click left at "What needs to be done?"
 type "Create the universe"
 type enter
 type "Make an apple pie"
 type enter
-click left at (135.40, 351.70)
-click left at (153.80, 398.10)
-move cursor to (511.40, 448.50)
-expect text "Create the universe"
-expect text "Make an apple pie"
+click left at "Create the universe"
+click left at "Make an apple pie"
+expect "0 tasks left"