Gossamer testing runtime w/ Session & Staking pallets

.github/CODEOWNERS

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+# CODEOWNERS: https://help.github.com/articles/about-codeowners/
+
+# Primary repo maintainers
+*       @edwardmack @timwu20 @EclesioMeloJunior @jimjbrettj @kishansagathiya @qdm12 @danforbes

.github/workflows/build-specs.yml

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+name: Build Chain Specs
+
+# Controls when the action will run.
+on:
+  # Triggers the workflow on push or pull request events but only for the master branch
+  push:
+    branches: [ gssmr-test ]
+  pull_request:
+    branches: [ gssmr-test ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  build-specs:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-20.04
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v2
+
+      - name: Set-Up
+        run: |
+          sudo apt update
+          sudo apt upgrade
+          sudo apt install -y git clang curl libssl-dev llvm libudev-dev protobuf-compiler
+
+      - name: Install Rustup
+        run: |
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+          source ~/.cargo/env
+          rustup default stable
+          rustup update nightly
+          rustup update stable
+          rustup target add wasm32-unknown-unknown --toolchain nightly
+
+      - name: Build
+        run: |
+          cargo build
+
+      - name: Build Specs
+        run: |
+          ./target/debug/gssmr-test-node build-spec --dev --disable-default-bootnode > dev-spec.json &&
+          ./target/debug/gssmr-test-node build-spec --dev --disable-default-bootnode --raw > dev-spec-raw.json &&
+          ./target/debug/gssmr-test-node build-spec --disable-default-bootnode > spec.json &&
+          ./target/debug/gssmr-test-node build-spec --disable-default-bootnode --raw > spec-raw.json
+
+      - name: Upload Artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: artifacts
+          path: |
+            dev-spec.json
+            dev-spec-raw.json
+            spec.json
+            spec-raw.json