Certificates Renewal + SSE

- Certificate renewal is just a re-request as it's forced already
- Rejig the routes for readability
- Added Server Side Events so that the UI would invalidate the
cache when changes happen on the backend, such as certs being
provided or failing
- Added a SSE Token, which has the same shelf life as normal token
but can't be used interchangeably. The reason for this is, the
SSE endpoint needs a token for auth as a Query param, so it would
be stored in log files. If someone where to get a hold of that,
it's pretty useless as it can't be used to change anything, only
to listen for events until it expires
- Added test endpoint for SSE testing only availabe in debug mode

backend/embed/api_docs/paths/tokens/get.json

@@ -1,21 +1,17 @@
 {
 	"operationId": "refreshToken",
 	"summary": "Refresh your access token",
-	"tags": [
-		"Tokens"
-	],
+	"tags": ["Tokens"],
 	"responses": {
 		"200": {
 			"description": "200 response",
 			"content": {
 				"application/json": {
 					"schema": {
-						"required": [
-							"result"
-						],
+						"required": ["result"],
 						"properties": {
 							"result": {
-								"$ref": "#/components/schemas/StreamObject"
+								"$ref": "#/components/schemas/TokenObject"
 							}
 						}
 					},
@@ -34,4 +30,4 @@
 			}
 		}
 	}
-}
+}