v1.0.1

Prepare the first stable release, v1.0.1 (#30)

* Prepare the first stable release, v1.0.1

Cut v1.0.1 as the first stable release — every preceding version was a
v1.0.0-preview.*. The CHANGELOG heading is the version source: the release
pipeline runs scripts/Set-VersionFromChangelog.ps1, which takes the first
line matching '^### v?X.Y.Z' and writes it into XrmSync.csproj. The
"first stable release" note above it is deliberately plain text rather
than a heading, so it cannot be mistaken for that version line.

The repository has moved to github.com/context-and-oss/XrmSync, so the
package project URL, README badges, clone URLs and documentation links
follow it; DataverseConnection moved to the same org and its links move
with it. Copyright is updated to 2026, and the LICENSE holder corrected
from Delegate A/S to Context& A/S to match the csproj and README. The
LICENSE keeps 2025 as a span (2025-2026) so the original publication year
is not dropped.

Co-Authored-By: Claude <noreply@anthropic.com> via Conducktor <conducktor@contextand.com>

* Align the remaining copyright notices with the LICENSE

The LICENSE carries a 2025-2026 span, so the README footer and the sample
assembly attributes now say the same thing. Without this a release PR shows
three different copyright years across the repo.

The sample AssemblyInfo files are Visual Studio template boilerplate for the
net462 fixture projects and are never shipped, but they are the first thing a
reader opening Samples/ sees.

Co-Authored-By: Claude <noreply@anthropic.com> via Conducktor <conducktor@contextand.com>

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Co-authored-by: Claude <noreply@anthropic.com> via Conducktor <conducktor@contextand.com>