feat(API): add route and implementation for creating/updating repository secret (#26766)

spec:
https://docs.github.com/en/rest/actions/secrets?apiVersion=2022-11-28#create-or-update-a-repository-secret

- Add a new route for creating or updating a secret value in a
repository
- Create a new file `routers/api/v1/repo/action.go` with the
implementation of the `CreateOrUpdateSecret` function
- Update the Swagger documentation for the `updateRepoSecret` operation
in the `v1_json.tmpl` template file

---------

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>

templates/swagger/v1_json.tmpl

@@ -3230,6 +3230,65 @@
         }
       }
     },
+    "/repos/{owner}/{repo}/actions/secrets/{secretname}": {
+      "put": {
+        "consumes": [
+          "application/json"
+        ],
+        "produces": [
+          "application/json"
+        ],
+        "tags": [
+          "repository"
+        ],
+        "summary": "Create or Update a secret value in a repository",
+        "operationId": "updateRepoSecret",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "owner of the repository",
+            "name": "owner",
+            "in": "path",
+            "required": true
+          },
+          {
+            "type": "string",
+            "description": "name of the repository",
+            "name": "repo",
+            "in": "path",
+            "required": true
+          },
+          {
+            "type": "string",
+            "description": "name of the secret",
+            "name": "secretname",
+            "in": "path",
+            "required": true
+          },
+          {
+            "name": "body",
+            "in": "body",
+            "schema": {
+              "$ref": "#/definitions/CreateOrUpdateSecretOption"
+            }
+          }
+        ],
+        "responses": {
+          "201": {
+            "description": "response when creating a secret"
+          },
+          "204": {
+            "description": "response when updating a secret"
+          },
+          "400": {
+            "$ref": "#/responses/error"
+          },
+          "403": {
+            "$ref": "#/responses/forbidden"
+          }
+        }
+      }
+    },
     "/repos/{owner}/{repo}/activities/feeds": {
       "get": {
         "produces": [