[FR]: Add a copy to markdown option for the required OS and RSS Guard version to use on GitHub

[shoulders]

Brief description of the feature request

In the About RSS Guard page it could be a useful tool to add a button to copy all of the required information into the clipboard as markdown that could then be used to paste information here.

Webmin/Virtualmin does this and it is very useful:

-->

|  SYSTEM INFORMATION||
|----------------------|---------------------------|
|  OS type and version |     Ubuntu Linux 22.04.3     |
|  Webmin version      |     2.105      |
|  Usermin version     |     2.005     |
|  Virtualmin version  |     7.9.0       |
|  Theme version       |     21.09.5      |
|  Package updates     |      30  package updates are available   |

-->

SYSTEM INFORMATION
OS type and version	Ubuntu Linux 22.04.3
Webmin version	2.105
Usermin version	2.005
Virtualmin version	7.9.0
Theme version	21.09.5
Package updates	30 package updates are available

-->

Relevant information

RSS Guard
Version: 4.6.3 (built on Windows/AMD64)
Revision: 43d164d
Build date: 15/12/2023 11:52
Qt: 6.5.3 (compiled against 6.5.3)
OS: Windows10 Pro 64-Bit

[martinrotter]

This is I believe not really needed, because users just copy the plain text info in top of About dialog like you did and it just works.

[martinrotter]

But will add a button to copy that plain text.

[martinrotter]

RSS Guard

Version: 4.6.6 (built on Windows/AMD64)
Revision: 202da68
Build date: 22.03.24 10:45
OS: Windows 10 Version 22H2
Qt: 6.6.0 (compiled against 6.6.0)

[shoulders]

Brilliant, thanks