feat(web/skillcheck): ability to cancel skillcheck (#364)

* - (FEAT) Added feature to cancel skillcheck
- (FEAT) Added feature to check is any active skillcheck

* - Fix hiding UI

* - return actual boolean

* - Fix focus does not reset properly

* Update skillcheck wrappers

resource/interface/client/skillcheck.lua

@@ -22,6 +22,19 @@ function lib.skillCheck(difficulty, inputs)
     return Citizen.Await(skillcheck)
 end
 
+function lib.cancelSkillCheck()
+    if not skillcheck then
+        error('No skillCheck is active')
+    end
+
+    SendNUIMessage({action = 'skillCheckCancel'})
+end
+
+---@return boolean
+function lib.skillCheckActive()
+    return skillcheck ~= nil
+end
+
 RegisterNUICallback('skillCheckOver', function(success, cb)
     cb(1)