wezterm: Ensure CTRL and SHIFT mods passed through

These bindings ensure that wezterm understands (and informs the shell)
that `<C-Return>` and `<S-Return>` are different key binds than just
`<Return>` on its own.

For example 'euporie' uses it to mimic the python notebook 'enter means
newline but ctrl-enter means execute' style of quick coding.

terminal/.config/wezterm/maps.lua

@@ -101,6 +101,8 @@ local keys = {
 	},
 	{ key = "a", mods = "CTRL|ALT", action = act.EmitEvent("toggle-leader") },
 	{ key = "t", mods = "LEADER", action = act.EmitEvent("toggle-tabbar") },
+	{ key = "Enter", mods = "CTRL", action = wezterm.action({ SendString = "\x1b[13;5u" }) },
+	{ key = "Enter", mods = "SHIFT", action = wezterm.action({ SendString = "\x1b[13;2u" }) },
 }
 -- Leader + number to activate that tab
 for i = 1, 8 do