Security Section Added

[hafijul233]

This pull request will add a security scheme the collection is using globally.

1. Security Type: [HTTP Basic, HTTP Bearer, API KEY] if the value is set to null then remove the security section.
2. Name: if the security type is apikey then the name value will be used for query params or Header Key value.
3. Position: For security type is apikey then position value is used for setting where the API key will be positioned (Header/Query Param)