Make the .NET global.json file global (#3297)

Move the global.json file to the repo root, which should make `dotnet`
resolve the correct SDK regardless of the directory it is run in.

Where a copy of the global.json file is needed, symlink it to the one at
the root.

Should fix "C#/Unity - Test Suite".

Author: kim

.github/workflows/benchmarks.yml

@@ -88,7 +88,7 @@ jobs:
       - name: Install .NET toolchain
         uses: actions/setup-dotnet@v3
         with:
-          global-json-file: modules/global.json
+          global-json-file: global.json
         env:
           DOTNET_INSTALL_DIR: ~/.dotnet
 

.github/workflows/ci.yml

@@ -43,7 +43,7 @@ jobs:
       - uses: dsherret/rust-toolchain-file@v1
       - uses: actions/setup-dotnet@v4
         with:
-          global-json-file: modules/global.json
+          global-json-file: global.json
       - name: Install psql (Windows)
         if: runner.os == 'Windows'
         run: choco install psql -y --no-progress
@@ -97,13 +97,13 @@ jobs:
 
       - uses: actions/setup-dotnet@v3
         with:
-          global-json-file: modules/global.json
+          global-json-file: global.json
 
       - name: Create /stdb dir
         run: |
           sudo mkdir /stdb
           sudo chmod 777 /stdb
-      
+
       - name: Run cargo test
         #Note: Unreal tests will be run separately
         run: cargo test --all -- --skip unreal
@@ -130,6 +130,10 @@ jobs:
       - uses: dsherret/rust-toolchain-file@v1
       - run: echo ::add-matcher::.github/workflows/rust_matcher.json
 
+      - uses: actions/setup-dotnet@v3
+        with:
+          global-json-file: global.json
+
       - name: Run cargo fmt
         run: cargo fmt --all -- --check
 

.github/workflows/csharp-test.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Setup dotnet
         uses: actions/setup-dotnet@v3
         with:
-          global-json-file: modules/global.json
+          global-json-file: global.json
 
       - name: Override NuGet packages
         run: |

crates/cli/src/subcommands/project/csharp/global._json

@@ -0,0 +1 @@
+../../../../../../global.json

crates/cli/src/subcommands/project/csharp/global._json

@@ -0,0 +1 @@
+../../../global.json

demo/Blackholio/server-csharp/global.json

@@ -0,0 +1 @@
+../../../../../global.json