docs: move api and cli docs routes to reference/ (#14241)

docs/reference/api/applications.md

@@ -0,0 +1,58 @@
+# Applications
+
+## Redirect to URI with encrypted API key
+
+### Code samples
+
+```shell
+# Example request using curl
+curl -X GET http://coder-server:8080/api/v2/applications/auth-redirect \
+  -H 'Coder-Session-Token: API_KEY'
+```
+
+`GET /applications/auth-redirect`
+
+### Parameters
+
+| Name           | In    | Type   | Required | Description          |
+| -------------- | ----- | ------ | -------- | -------------------- |
+| `redirect_uri` | query | string | false    | Redirect destination |
+
+### Responses
+
+| Status | Meaning                                                                 | Description        | Schema |
+| ------ | ----------------------------------------------------------------------- | ------------------ | ------ |
+| 307    | [Temporary Redirect](https://tools.ietf.org/html/rfc7231#section-6.4.7) | Temporary Redirect |        |
+
+To perform this operation, you must be authenticated. [Learn more](authentication.md).
+
+## Get applications host
+
+### Code samples
+
+```shell
+# Example request using curl
+curl -X GET http://coder-server:8080/api/v2/applications/host \
+  -H 'Accept: application/json' \
+  -H 'Coder-Session-Token: API_KEY'
+```
+
+`GET /applications/host`
+
+### Example responses
+
+> 200 Response
+
+```json
+{
+  "host": "string"
+}
+```
+
+### Responses
+
+| Status | Meaning                                                 | Description | Schema                                                         |
+| ------ | ------------------------------------------------------- | ----------- | -------------------------------------------------------------- |
+| 200    | [OK](https://tools.ietf.org/html/rfc7231#section-6.3.1) | OK          | [codersdk.AppHostResponse](schemas.md#codersdkapphostresponse) |
+
+To perform this operation, you must be authenticated. [Learn more](authentication.md).