Lack of consistency in agent definitions

[stuartjsmith]

It would be ideal if agent definitions could follow a standard format at the top of each agent file so that they display consistently in e.g. VSCode

1. Agent definition starts with Name, followed by Description
2. Agent name is in Title Case
3. Agent description is in Sentence case
4. Name and Description values are both enclosed in double quotes

[stuartjsmith]

PR: #563