How to patch new properties in web.config

Hi Guys,

I have a requirement of patching some properties to the existing web.config. I am trying to do it via Add-on so i dont have access to web.config but i want to make my property added to the web.config of the user who uses my Add-on.

Example : 

For the below section in the web.config i want to add the language1 from a external config file which comes as part of add-on.

<profile defaultProvider="DefaultProfileProvider">
<properties>
<add name="Address" type="System.String" />
<add name="ZipCode" type="System.String" />
<add name="Locality" type="System.String" />
<add name="Email" type="System.String" />
<add name="FirstName" type="System.String" />
<add name="LastName" type="System.String" />
<add name="Language" type="System.String" />
<add name="Country" type="System.String" />
<add name="Company" type="System.String" />
<add name="Title" type="System.String" />
<add name="CustomExplorerTreePanel" type="System.String" />
<add name="FileManagerFavourites" type="System.Collections.Generic.List`1[System.String]" />
<add name="EditTreeSettings" type="EPiServer.Personalization.GuiSettings, EPiServer.Cms.AspNet" />
<add name="ClientToolsActivationKey" type="System.String" />
<add name="FrameworkName" type="System.String" />
<add name="Language1" type="System.String"/>
</properties>
</profile>

Do we have any thing similar like patching we can do for the same? Any specific process like transformation for environments in DXC.

Regards,

Manik