Get nuget symbols from XML file next to dll for matching

[AyanSinhaMahapatra]

sometimes XML files beside a .dll file (with the same name) seems like it contains a lot of info on symbols, ti would be nice if we can extract the symbols from this XML file and match the XML file + the .dll file by matching source symbols.

Example:

Consider the binary: https://github.com/tmenier/Flurl/releases/download/Flurl.Http.4.0.2/Flurl.Http.4.0.2.nupkg

we have in the binary:

to/lib/net461/Flurl.Http.dll
to/lib/net461/Flurl.Http.xml
to/lib/net6.0/Flurl.Http.dll
to/lib/net6.0/Flurl.Http.xml
to/lib/netstandard2.0/Flurl.Http.dll
to/lib/netstandard2.0/Flurl.Http.xml

One of the XML file contents is as follows:

<?xml version="1.0"?>
<doc>
    <assembly>
        <name>Flurl.Http</name>
    </assembly>
    <members>
        <member name="T:Flurl.Http.Configuration.DefaultJsonSerializer">
            <summary>
            ISerializer implementation based on System.Text.Json.
            Default serializer used in calls to GetJsonAsync, PostJsonAsync, etc.
            </summary>
        </member>
        <member name="M:Flurl.Http.Configuration.DefaultJsonSerializer.#ctor(System.Text.Json.JsonSerializerOptions)">
            <summary>
            Initializes a new instance of the <see cref="T:Flurl.Http.Configuration.DefaultJsonSerializer"/> class.
            </summary>
            <param name="options">Options to control (de)serialization behavior.</param>
        </member>

Here the member names contains symbols:

<member name="T:Flurl.Http.Configuration.DefaultJsonSerializer">
<member name="M:Flurl.Http.Configuration.DefaultJsonSerializer.#ctor(System.Text.Json.JsonSerializerOptions)">

which can be matched to source symbols at the source archives from: https://github.com/tmenier/Flurl