Build Polkadot Nodes in CI - fixes artifact generation (#1410)

* new workflow and adjust node builder

* fix examples by fixing artifacts script

* use-nodes instead of use-substrate

* update yamls

* build polkadot

* remove the on-push trigger again, now that polkadot built in the CI

* add default implementation again

.github/workflows/actions/use-nodes/README.md

@@ -0,0 +1,3 @@
+# use-nodes
+
+This action downloads the substrate and polkadot binaries produced from the `build-nodes` workflow and puts them into the `$PATH`.

.github/workflows/actions/use-nodes/action.yml

@@ -0,0 +1,33 @@
+name: Use substrate and polkadot binaries
+description: Downloads and configures the substrate and polkadot binaries built with `build-nodes`
+runs:
+  using: composite
+  steps:
+    - name: Download substrate-node binary
+      id: download-substrate-binary
+      uses: dawidd6/action-download-artifact@268677152d06ba59fcec7a7f0b5d961b6ccd7e1e # v2.28.0
+      with:
+        workflow: build-nodes.yml
+        name: nightly-substrate-binary
+
+    - name: Download polkadot binary
+      id: download-polkadot-binary
+      uses: dawidd6/action-download-artifact@268677152d06ba59fcec7a7f0b5d961b6ccd7e1e # v2.28.0
+      with:
+        workflow: build-nodes.yml
+        name: nightly-polkadot-binary
+
+    - name: Prepare binaries
+      shell: bash
+      run: |
+        chmod u+x ./substrate-node
+        chmod u+x ./polkadot
+        chmod u+x ./polkadot-execute-worker
+        chmod u+x ./polkadot-prepare-worker
+        ./substrate-node --version
+        ./polkadot --version
+        mkdir -p ~/.local/bin
+        cp ./substrate-node ~/.local/bin
+        cp ./polkadot ~/.local/bin
+        cp ./polkadot-execute-worker ~/.local/bin
+        cp ./polkadot-prepare-worker ~/.local/bin

.github/workflows/actions/use-substrate/README.md

@@ -1,3 +0,0 @@
-# use-substrate
-
-This action downloads the substrate binary produced from the `build-substrate` workflow and puts it into the `$PATH`.

.github/workflows/actions/use-substrate/action.yml

@@ -1,19 +0,0 @@
-name: Use substrate binary
-description: Downloads and configures the substrate binary built with build-substrate
-runs:
-  using: composite
-  steps:
-    - name: Download substrate-node binary
-      id: download-artifact
-      uses: dawidd6/action-download-artifact@268677152d06ba59fcec7a7f0b5d961b6ccd7e1e # v2.28.0
-      with:
-        workflow: build-substrate.yml
-        name: nightly-substrate-binary
-
-    - name: Prepare substrate-node binary
-      shell: bash
-      run: |
-        chmod u+x ./substrate-node
-        ./substrate-node --version
-        mkdir -p ~/.local/bin
-        cp ./substrate-node ~/.local/bin