chore: Extract release workflow for automated NuGet package publishing with release-drafter action (#179)

This pull request includes significant changes to the GitHub Actions
workflows, specifically around the CI and release processes. The most
important changes involve the removal of the old CI workflow and the
addition of a new release workflow.

Changes to GitHub Actions workflows:

*
[`.github/workflows/ci.yml`](diffhunk://#diff-b803fcb7f17ed9235f1e5cb1fcd2f5d3b2838429d4368ae4c57ce4436577f03fL1-L70):
Removed the entire CI workflow configuration, which included testing on
multiple operating systems, building packages, and publishing artifacts.
*
[`.github/workflows/release.yml`](diffhunk://#diff-87db21a973eed4fef5f32b267aa60fcee5cbdf03c67fafdc2a9b553bb0b15f34R1-R50):
Added a new release workflow configuration that triggers on tag pushes,
builds and tests the package, and publishes the NuGet package and
release artifacts.

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: Riges

.github/release-drafter.yml

@@ -1,3 +1,4 @@
+commitish: master
 name-template: "Release $RESOLVED_VERSION"
 tag-template: "v$RESOLVED_VERSION"
 template: |

.github/workflows/ci.yml

@@ -0,0 +1,50 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - v*.*.*
+
+jobs:
+  Publish:
+    name: Create NuGet Package
+    runs-on: ubuntu-latest
+    env:
+      NUGET_PACKAGES: ${{ github.workspace }}/.nuget/packages
+    steps:
+      - name: Get the version
+        id: version
+        run: |
+          tag=${GITHUB_REF/refs\/tags\//}
+          version=${tag#v}
+          echo "VERSION=${version}" >> $GITHUB_ENV
+          echo "version=${version}" >> $GITHUB_OUTPUT
+          echo "TAG=${tag}" >> $GITHUB_ENV
+          echo "tag=${tag}" >> $GITHUB_OUTPUT
+      - uses: actions/checkout@v4
+      - name: Setup dotnet
+        uses: actions/setup-dotnet@v4
+        with:
+          global-json-file: global.json
+          cache: true
+          cache-dependency-path: '**/packages.lock.json'
+      - name: Restore packages
+        run: dotnet restore --locked-mode
+      - name: Test
+        run: dotnet test --configuration Release
+      - name: Build NuGet Package
+        run: dotnet pack -c Release -p:PackageVersion="${{ env.VERSION }}" --output ./output
+      - name: Publish Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: Netatmo.${{ env.VERSION }}.nupkg
+          path: './output/Netatmo.${{ env.VERSION }}.nupkg'
+      - name: Push package
+        run: dotnet nuget push ./output/Netatmo.${{ env.VERSION }}.nupkg -k ${{ secrets.NUGET_ORG_KEY }} -s https://api.nuget.org/v3/index.json
+
+      - uses: release-drafter/release-drafter@v6
+        with:
+          version: ${{ steps.version.outputs.version }}
+          publish: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}