Adding a Python example demonstrating reasoning effort for gpt-oss-120b

As requested in ATS-20048, this MR includes the respective Python example and presents it in a tabular format, as shown here:

Additionally, this MR also enhances the structure of the anchor links, allowing the following links for the respective tabs:

• https://docs.jetstream-cloud.org/inference-service/api-examples/#configuring-reasoning-effort-for-gpt-oss-120b-bash
• https://docs.jetstream-cloud.org/inference-service/api-examples/#configuring-reasoning-effort-for-gpt-oss-120b-python

As described in the following documentation:

• https://squidfunk.github.io/mkdocs-material/reference/content-tabs/#anchor-links
• https://facelessuser.github.io/pymdown-extensions/extensions/tabbed/#tab-ids
• https://squidfunk.github.io/mkdocs-material/setup/extensions/python-markdown-extensions/#tabbed