expand pingserver functionality (#134)

Adds gRPC, including gRPC directly implemented over HTTP2 and HTTP3, support to the pingserver and provides an
alternate implementation of the ASCII pingserver using Tokio as the IO engine.

.github/actions/pingserver/action.yml

@@ -41,6 +41,6 @@ runs:
       shell: bash
     - name: Run pingserver
       run: |
-        pelikan_pingserver_rs server.toml &
+        pelikan_pingserver server.toml &
         sleep 10
       shell: bash

.github/workflows/cargo.yml

@@ -30,7 +30,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: ./.github/actions/setup-rust
       - uses: Swatinem/rust-cache@v2
       - uses: swlynch99/cargo-sweep-action@v1
       - uses: taiki-e/install-action@cargo-hack
@@ -96,7 +96,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: ./.github/actions/setup-rust
       - name: cargo fmt
         shell: bash
         run: |
@@ -146,7 +146,7 @@ jobs:
         shell: bash
         run: |
           mkdir install
-          cp target/release/pelikan_pingserver_rs install
+          cp target/release/pelikan_pingserver install
           cp target/release/pelikan_pingproxy_rs  install
       - uses: actions/upload-artifact@v3
         if: ${{ matrix.profile == 'release' && matrix.os == 'ubuntu-latest' }}