Files : API changes for 5.5 - Require API to get version history of a file

Specification : 

API to get the version history of a file
Endpoint :   /api/12/files/{fileid}/versions

Method : (GET)
Require Fields:

   Version number
   Version date & time
   Author (User detail including UserId, Name)
   Notes
   Extension
   Original Extension
   Redaction status

Parameters:

Description:

- All versions of the file that the logged in user has access to are returned
- Date and Time will be given in UTC
- Author should be given as From UserDBO format.
- Notes will be given as string and as version notes in UI
- Extension will be given as string as file extension
- Redaction status value will be given as true or false based on whether the file is redacted or not

The value of the limit parameter will be the following:
- limit =25 this is the default value
- if limit>0 then the number of items returned is equal to that limit
- if limit=-1 then return all records
- if limit <-1 then the system returns the default number of items i.e 25

The value of the Offset parameter behaves as per below:
- (Default) offset =0
- if offset > 0 then the records are returned from the offset value
- if offset < 0 then offset value of 0 is set

Request Parameters:

Response XML:

    <versions>
        <version>
            <number>1</number>
            <createddate>28 Aug 2019 11:13</createddate>
            <author>
                <firstname>Tom</firstname>
                <lastname>Chick</lastname>
                <email>tom.chick@highq.com</email>
                <userid>100</userid>
            </author>
            <notes>This is version used for testing</notes>
            <extension>pdf</extension>
            <redactionstatus>true</redactionstatus>
        </version>
         <version>
            <number>2</number>
            <createddate>28 Aug 2019 11:13</createddate>
            <author>
                <firstname>Tom</firstname>
                <lastname>Chick</lastname>
                <email>tom.chick@highq.com</email>
                <userid>100</userid>
            </author>
            <notes>This is version used for testing2</notes>
           <extension>txt</extension>
           <originalextension>pdf</originalextension>
          <redactionstatus>false</redactionstatus>
        </version>
    </versions>