refactor(behaviors): Add max-held tap-dance config (#2838)

refactor(behaviors): Add max-held tap-dance config

Add new `CONFIG_ZMK_BEHAVIOR_TAP_DANCE_MAX_HELD` config for reducing RAM
usage on more constrained devices.

refactor(behaviors): Move defaults to Kconfig.defaults

app/Kconfig.behaviors

@@ -51,13 +51,11 @@ if ZMK_BEHAVIOR_HOLD_TAP
 
 config ZMK_BEHAVIOR_HOLD_TAP_MAX_HELD
     int "Hold Tap Max Held"
-    default 10
     help
       Max number of simultaneously held hold-taps
 
 config ZMK_BEHAVIOR_HOLD_TAP_MAX_CAPTURED_EVENTS
     int "Hold Tap Max Captured Events"
-    default 40
     help
       Max number of captured system events while waiting to resolve hold taps
 
@@ -82,7 +80,6 @@ if ZMK_BEHAVIOR_STICKY_KEY
 
 config ZMK_BEHAVIOR_STICKY_KEY_MAX_HELD
     int "Sticky Key Max Held"
-    default 10
     help
       Max number of simultaneously held sticky keys
 
@@ -93,6 +90,21 @@ config ZMK_BEHAVIOR_SOFT_OFF
     default y
     depends on DT_HAS_ZMK_BEHAVIOR_SOFT_OFF_ENABLED && ZMK_PM_SOFT_OFF
 
+
+config ZMK_BEHAVIOR_TAP_DANCE
+    bool
+    default y
+    depends on DT_HAS_ZMK_BEHAVIOR_TAP_DANCE_ENABLED
+
+if ZMK_BEHAVIOR_TAP_DANCE
+
+config ZMK_BEHAVIOR_TAP_DANCE_MAX_HELD
+    int "Tap-Dance Max Held"
+    help
+      Max number of simultaneously held taps-dances
+
+endif
+
 config ZMK_BEHAVIOR_INPUT_TWO_AXIS
     bool
     default y