bastet: add page (#4940)

pages/common/bastet.md

@@ -0,0 +1,32 @@
+# bastet
+
+> Clone of the game Tetris in the terminal.
+> More information: <https://fph.altervista.org/prog/bastet.html>.
+
+- Start a tetris game:
+
+`bastet`
+
+- Navigate the piece horizontally:
+
+`{{Left|Right}} arrow key`
+
+- Rotate the piece clockwise or counterclockwise:
+
+`{{Spacebar|Up arrow key}}`
+
+- Soft drop the piece:
+
+`Down arrow key`
+
+- Hard drop the piece:
+
+`Enter`
+
+- Pause the game:
+
+`p`
+
+- Quit the game:
+
+`Ctrl + C`