Update guide - database-upgrade-storage-optimization doc. Closes #210.

[prithage]

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[github-actions]

Preview link: https://turbot-com-git-docs-guardrailsdb-upgrade-storage-doc-update-turbot.vercel.app

[rajlearner17]

@RahulSrivastav14 As discussed we need to update the sections as below

1. Step 1: Spin up a new TED > Break this section to multiple steps with image reference from service catalog service as discussed
2. Step 2: Enable Logical Replication > Extend this with steps with image reference
3. Step 3: Set Master Password > We can refer them AWS doc here with a image
4. Step 4: Setup and Connect to Bastion Host > Refer to the guardrail-sample repo, how to setup
5. Step 12: Monitor Progress > Prefer to elaborate or provide image reference
6. Step 14: Turn Off Events > Refer to our existing document if not available create issue for now
7. Step 15: Rename DB Instances > Prefer to show pre and post activity image reference
8. Step 16: Disable and delete subscription > if we can show this visually?
9. Adjust Step16 as repeated
10. Step 18: Run Smoke Tests > We have to come up with note how the smoke test will be done and steps to it
11. Step 19: Clean Up > Requires more clarity with steps and required images as example
12. Troubleshooting > We need to expand this further in case we have any common errors during the process.