1.0.4c-zio1: CSS 1.0.375 / net10.0, fixes, SimpleAdmin ranks

- Target net10.0 and CounterStrikeSharp 1.0.375 (compile-only reference),
  System.Text.Json instead of Newtonsoft.Json.
- Config moves to configs/plugins/CS2-Tags/tags.json, defaulting to our
  #rank/... SimpleAdmin groups. Comments and trailing commas allowed; a bad
  file is logged and the previous tags kept.
- Scoreboard tags call SetStateChanged on m_szClan, only when changed.
- Colour tags are expanded only in config strings, not in players' names or
  messages. Empty nick_color means team colour.
- A tag with no prefix or colours leaves chat to the game; drop team_chat.
- css_tags_reload works for @css/root too and reapplies scoreboard tags;
  hot reload tags connected players. Timers stop on map change. No dead
  icon for spectators.
- Remove css_tag_mute/unmute and "@" team admin chat: CS2-SimpleAdmin does
  both, and its catch-all command listener runs before these.
- Add release.sh, drop the .sln and GitHub workflow, README for the fork.

.github/workflows/build.yml

@@ -1,67 +0,0 @@
-name: Build
-
-on:
-  push:
-    branches: [ "main" ]
-  pull_request:
-    branches: [ "main" ]
-
-env:
-  BUILD_NUMBER: ${{ github.run_number }}
-  PROJECT_PATH: "CS2-Tags.csproj"
-  PROJECT_NAME: "CS2-Tags"
-  OUTPUT_PATH: "./CS2-Tags"
-
-jobs:
-  build:
-    permissions: write-all
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Setup .NET
-      uses: actions/setup-dotnet@v3
-      with:
-        dotnet-version: 7.0.x
-    - name: Restore
-      run: dotnet restore
-    - name: Build
-      run: dotnet build ${{ env.PROJECT_PATH }} -c WeaponPaints -o ${{ env.OUTPUT_PATH }}
-
-  publish:
-    if: github.event_name == 'push'
-    permissions: write-all
-    runs-on: ubuntu-latest
-    needs: build
-    steps:
-    - uses: actions/checkout@v3
-    - name: Setup .NET
-      uses: actions/setup-dotnet@v3
-      with:
-        dotnet-version: 7.0.x
-    - name: Restore
-      run: dotnet restore
-    - name: Build
-      run: dotnet build ${{ env.PROJECT_PATH }} -c WeaponPaints -o ${{ env.OUTPUT_PATH }}
-    - name: Clean files
-      run: |
-        rm -f \
-          ${{ env.OUTPUT_PATH }}/CounterStrikeSharp.API.dll \
-          ${{ env.OUTPUT_PATH }}/McMaster.NETCore.Plugins.dll \
-          ${{ env.OUTPUT_PATH }}/Microsoft.DotNet.PlatformAbstractions.dll \
-          ${{ env.OUTPUT_PATH }}/Microsoft.Extensions.DependencyModel.dll \
-    - name: Zip
-      uses: thedoctor0/zip-release@0.7.5
-      with:
-        type: 'zip'
-        filename: '${{ env.PROJECT_NAME }}.zip'
-        path: ${{ env.OUTPUT_PATH }}
-    - name: CS2-Tags
-      uses: ncipollo/release-action@v1.12.0
-      with:
-        artifacts: "${{ env.PROJECT_NAME }}.zip"
-        name: "Build ${{ env.BUILD_NUMBER }}"
-        tag: "build-${{ env.BUILD_NUMBER }}"
-        body: |
-          Place the plugin in game/csgo/addons/counterstrikesharp/plugins/CS2-Tags
-          After first server start, tags.json be created