docs: Mintlify MDX docs + docs.json; bump Speakeasy to 1.787.0 (#382)

docs/components/easyinputmessageroleunion.mdx

@@ -0,0 +1,30 @@
+---
+title: "EasyInputMessageRoleUnion"
+---
+
+## Supported Types
+
+### `components.EasyInputMessageRoleUser`
+
+```python
+value: components.EasyInputMessageRoleUser = /* values here */
+```
+
+### `components.EasyInputMessageRoleSystem`
+
+```python
+value: components.EasyInputMessageRoleSystem = /* values here */
+```
+
+### `components.EasyInputMessageRoleAssistant`
+
+```python
+value: components.EasyInputMessageRoleAssistant = /* values here */
+```
+
+### `components.EasyInputMessageRoleDeveloper`
+
+```python
+value: components.EasyInputMessageRoleDeveloper = /* values here */
+```
+