Make numlock state on boot configurable

Make numlock state on boot configurable

This will expose 3 settings for numlock behavior:
1. Numlock is off on boot (this is the current default behavior)
2. Numlock is on on boot
3. Numlock will restore the state from the last boot

Fixes #369

* Address comments:

Get keyboard after create_seat called rather than returning from
create_seat.
Use constants rather than magic numbers for keypress.
Only save updated modifier state after keypresses are handled/skipped.

* Remove unused import, fold other into existing use block.

cosmic-comp-config/src/lib.rs

@@ -7,6 +7,20 @@ use std::collections::HashMap;
 pub mod input;
 pub mod workspace;
 
+#[derive(Clone, Debug, Default, PartialEq, Serialize, Deserialize)]
+pub struct KeyboardConfig {
+    /// Boot state for numlock
+    pub numlock_state: NumlockState,
+}
+
+#[derive(Copy, Clone, Debug, Default, PartialEq, Serialize, Deserialize)]
+pub enum NumlockState {
+    BootOn,
+    #[default]
+    BootOff,
+    LastBoot,
+}
+
 #[derive(Clone, Debug, PartialEq, CosmicConfigEntry)]
 #[version = 1]
 pub struct CosmicCompConfig {
@@ -15,6 +29,7 @@ pub struct CosmicCompConfig {
     pub input_touchpad: input::InputConfig,
     pub input_devices: HashMap<String, input::InputConfig>,
     pub xkb_config: XkbConfig,
+    pub keyboard_config: KeyboardConfig,
     /// Autotiling enabled
     pub autotile: bool,
     /// Determines the behavior of the autotile variable
@@ -53,6 +68,7 @@ impl Default for CosmicCompConfig {
             },
             input_devices: Default::default(),
             xkb_config: Default::default(),
+            keyboard_config: Default::default(),
             autotile: Default::default(),
             autotile_behavior: Default::default(),
             active_hint: true,