fixing payload load

[Mzack9999]

Proposed changes

• Removed -sandbox option, now divided into two new options shared below.
• Added options to enable/disable file/network access.

   -lna, -restrict-local-network-access  blocks connections to the local / private network
   -lfa, -allow-local-file-access  allows file (payload) access anywhere on the system

• Fixed issue with payloads feature in sandbox mode.

Checklist

• Pull request is created against the dev branch
• All checks passed (lint, unit/integration/regression tests etc.) with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[tarunKoyalwar]

lgtm !

[tarunKoyalwar]

if !(templatePathDir != "/" && strings.HasPrefix(pt, templatePathDir)) && !strings.HasPrefix(pt, templateDirectory)

above code is used to restrict access

• if payload file is not in template directory
• if payload file is not in directory where template is present

@Mzack9999 i am not sure but i think we need to test this in windows enviornment to verify if this is working properly since the root path here is / but root path is different for windows distro and also https://pkg.go.dev/vuln/GO-2023-1568

[Mzack9999]

@tarunKoyalwar I think we need to add a function in utils package that given a path, perform cross-platform check from a list of allowed directories. Will create a ticket for that, meanwhile we can temporary merge this upon @Ice3man543 confirmation.