Add global_parameters upstream example

docs/examples/workflows/upstream/global_parameters.md

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+# Global Parameters
+
+> Note: This example is a replication of an Argo Workflow example in Hera. The upstream example can be [found here](https://github.com/argoproj/argo-workflows/blob/master/examples/global-parameters.yaml).
+
+
+
+
+=== "Hera"
+
+    ```python linenums="1"
+    from hera.workflows import Container, Parameter, Workflow
+
+    with Workflow(
+        generate_name="global-parameters-",
+        entrypoint="whalesay1",
+        arguments=Parameter(name="message", value="hello world"),
+    ) as w:
+        Container(
+            name="whalesay1",
+            image="docker/whalesay:latest",
+            command=["cowsay"],
+            args=["{{workflow.parameters.message}}"],
+        )
+    ```
+
+=== "YAML"
+
+    ```yaml linenums="1"
+    apiVersion: argoproj.io/v1alpha1
+    kind: Workflow
+    metadata:
+      generateName: global-parameters-
+    spec:
+      arguments:
+        parameters:
+        - name: message
+          value: hello world
+      entrypoint: whalesay1
+      templates:
+      - container:
+          args:
+          - '{{workflow.parameters.message}}'
+          command:
+          - cowsay
+          image: docker/whalesay:latest
+        name: whalesay1
+    ```
+

examples/workflows/upstream/global-parameters.upstream.yaml

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+apiVersion: argoproj.io/v1alpha1
+kind: Workflow
+metadata:
+  generateName: global-parameters-
+spec:
+  entrypoint: whalesay1
+  # Parameters can be passed/overridden via the argo CLI.
+  # To override the printed message, run `argo submit` with the -p option:
+  # $ argo submit examples/arguments-parameters.yaml -p message="goodbye world"
+  arguments:
+    parameters:
+    - name: message
+      value: hello world
+
+  templates:
+  - name: whalesay1
+    container:
+      image: docker/whalesay:latest
+      command: [cowsay]
+      args: ["{{workflow.parameters.message}}"]

examples/workflows/upstream/global-parameters.yaml

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+apiVersion: argoproj.io/v1alpha1
+kind: Workflow
+metadata:
+  generateName: global-parameters-
+spec:
+  arguments:
+    parameters:
+    - name: message
+      value: hello world
+  entrypoint: whalesay1
+  templates:
+  - container:
+      args:
+      - '{{workflow.parameters.message}}'
+      command:
+      - cowsay
+      image: docker/whalesay:latest
+    name: whalesay1

examples/workflows/upstream/global_parameters.py

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+from hera.workflows import Container, Parameter, Workflow
+
+with Workflow(
+    generate_name="global-parameters-",
+    entrypoint="whalesay1",
+    arguments=Parameter(name="message", value="hello world"),
+) as w:
+    Container(
+        name="whalesay1",
+        image="docker/whalesay:latest",
+        command=["cowsay"],
+        args=["{{workflow.parameters.message}}"],
+    )