Add new operator & improve on the set variable action

Add new operator: Match Pattern in Conditional Block (https://feedback.uchat.com.au/boards/feature-requests/posts/add-new-operator-match-pattern-in-conditional-block)


Ability to be able to add space in the Set variable and in Conditional operation (https://feedback.uchat.com.au/boards/feature-requests/posts/ability-to-be-able-to-add-space-in-the-set-variable-and-in-conditional-operation)

allow to use Math Formula in Condition block number operations https://feedback.uchat.com.au/boards/feature-requests/posts/support-simple-operations-e[…]-step-instead-of-using-an-extra-action-step-and-user-field