feat: Update swagger to openapi 3.0.4, update request payloads with examples (#11533)

# Pull Request Template

## Description

Updates the public swagger spec to be OpenAPI 3.0.4 compliant. Regarding
#7893, I'm investigating the use of
[oas_rails](https://github.com/a-chacon/oas_rails) to auto-generate the
documentation along with correct expected payloads.
Mostly fixes #10531, related to #7893

## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality not to work as expected)
- [ ] This change requires a documentation update

## How Has This Been Tested?

Copied spec into swagger editor, reviewed outputs:

![openapi](https://github.com/user-attachments/assets/bd43f895-74bb-4373-ba6d-c5b190b699dd)

Note that this shows two errors with the `DELETE` endpoints as
technically these should not have a `requestBody` - in which case we
should be making use of another HTTP verb or another endpoint.

## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [x] Any dependent changes have been merged and published in downstream
modules

---------

Co-authored-by: Daniel Jimenez <devildan.knex@gmail.com>
Co-authored-by: Daniel Jimenez <daniel.jimenez@spark64.com>

swagger/definitions/resource/agent_bot.yml

@@ -9,9 +9,24 @@ properties:
   description:
     type: string
     description: The description about the agent bot
-  account_id:
-    type: number
-    description: Account ID if it's an account specific bot
+  thumbnail:
+    type: string
+    description: The thumbnail of the agent bot
   outgoing_url:
     type: string
     description: The webhook URL for the bot
+  bot_type:
+    type: string
+    description: The type of the bot
+  bot_config:
+    type: object
+    description: The configuration of the bot
+  account_id:
+    type: number
+    description: Account ID if it's an account specific bot
+  access_token:
+    type: string
+    description: The access token for the bot
+  system_bot:
+    type: boolean
+    description: Whether the bot is a system bot