Remove matrix workflow and add test workflow with jobs and steps (Test / Demo)

Author: saiusesgithub

.github/workflows/matrix.yaml

@@ -0,0 +1,30 @@
+name: Workflows, Jobs, and Steps
+
+on:
+  workflow_dispatch:
+jobs:
+  job-1:
+    runs-on: ubuntu-24.04
+    steps:
+      - run: echo "A job consists of"
+      - run: echo "one or more steps"
+      - run: echo "which run sequentially"
+      - run: echo "within the same compute environment"
+  job-2:
+    runs-on: ubuntu-24.04
+    steps:
+      - run: echo "Multiple jobs can run in parallel"
+  job-3:
+    runs-on: ubuntu-24.04
+    needs:
+      - job-1
+      - job-2
+    steps:
+      - run: echo "They can also depend on one another..."
+  job-4:
+    runs-on: ubuntu-24.04
+    needs:
+      - job-2
+      - job-3
+    steps:
+      - run: echo "...to form a directed acyclic graph (DAG)"