feat(reports): Add new CSV report type

[NicolasToussaint]

Description

Add a new CSV Report type.
The following fields are exported:

• FileName
• SPDXID
• LicenseConcluded
• LicenseComment
• LicenseInfoInFile
• FileCopyrightText

Changes

• A new report entry was added to the drop-down action list
  
• A new SpdxTwoCommaSeparatedValuesAgentPlugin was introduced, see src/spdx2/ui/SpdxTwoCommaSeparatedValuesAgentPlugin.php

How to test

1. Trigger new scan
2. Browse to new upload, open Action dorp down action list, choose Export CSV Report

FileName,SPDXID,LicenseConcluded,LicenseComment,LicenseInfoInFile,FileCopyrightText
PackageName: clementine-player-master.tar.gz - PackageFileName: clementine-player-master.tar.gz
clementine-player-master.tar.gz/clementine-player-master.tar/3rdparty/libmygpo-qt/qjsonwrapper/Json.cpp,SPDXRef-item1125366,"MIT",,"MIT","Copyright 2014, Uwe L. Korn <uwelk@xhochy.com>"                                     
clementine-player-master.tar.gz/clementine-player-master.tar/3rdparty/libmygpo-qt/qjsonwrapper/Json.h,SPDXRef-item1125365,"MIT",,"MIT","Copyright 2014, Uwe L. Korn <uwelk@xhochy.com>"                                     
clementine-player-master.tar.gz/clementine-player-master.tar/3rdparty/libprojectm/ConfigFile.h,SPDXRef-item1125700,"MIT",,"MIT","Copyright (c) 2004 Richard J. Wagner"                                     
clementine-player-master.tar.gz/clementine-player-master.tar/3rdparty/libprojectm/glew.c,SPDXRef-item1125708,"BSD-3-Clause",,"BSD-3-Clause","Copyright (C) 2002-2008, Milan Ikits <milan ikits[]ieee org>;Copyright (C) 2002-2008, Marcelo E. Magallon <mmagallo[]debian org>;Copyright (C) 2002, Lev Povalahev All rights reserved."                                     

[GMishx]

Changes looks good. Needs test.

[GMishx]

Tested, working as expected.

[pastel001]

how can i generate a spdx2csv format report by rest api?
rest api response is reportFormat must be from [dep5,spdx2,spdx2tv,readmeoss,unifiedreport,clixml]

[GMishx]

how can i generate a spdx2csv format report by rest api? rest api response is reportFormat must be from [dep5,spdx2,spdx2tv,readmeoss,unifiedreport,clixml]

Looks like we missed adding it to the API. Can you please create an issue so we add the report format to REST API as well?