Feature/audit certificate upload (#30223)

* feat: Add certificate upload option for audit logging settings

* Commit current changes

* Additions

* MM-62944 Fix fileupload settings not being clickable

* Support for uploading a cert for experimental audit logging cert. Pre cloud implementation in the backend

* Forgot to add new hook

* Add support for setting custom audit log certifcates in Cloud

* Permissions

* I18n

* Change order

* Linter fixes

* Linter fixes, add openapi spec

* additions for openapi

* More openapi fixes because it won't run locally

* Undo, cursor went rogue

* newline fix

* Align types properly

* Fix i18n

* Fix i18n AGAIN

* Fix error

* Update api/v4/source/audit_logging.yaml

---------

Co-authored-by: Harrison Healey <harrisonmhealey@gmail.com>
Co-authored-by: Mattermost Build <build@mattermost.com>

api/v4/source/audit_logging.yaml

@@ -0,0 +1,68 @@
+  /api/v4/audit_logs/certificate:
+    post:
+      tags:
+        - audit_logs
+      summary: Upload audit log certificate
+      description: |
+        Upload the certificate to be used for TLS verification with the audit log service.
+
+        ##### Permissions
+        Must have `sysconsole_write_experimental_features` permission.
+
+        __Minimum server version__: 10.9
+      operationId: AddAuditLogCertificate
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              type: object
+              properties:
+                certificate:
+                  description: The certificate file
+                  type: string
+                  format: binary
+              required:
+                - certificate
+      responses:
+        "200":
+          description: Certificate upload successful
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/StatusOK"
+        "400":
+          $ref: "#/components/responses/BadRequest"
+        "401":
+          $ref: "#/components/responses/Unauthorized"
+        "403":
+          $ref: "#/components/responses/Forbidden"
+        "413":
+          $ref: "#/components/responses/TooLarge"
+        "501":
+          $ref: "#/components/responses/NotImplemented"
+
+    delete:
+      tags:
+        - audit_logs
+      summary: Remove audit log certificate
+      description: |
+        Delete the current certificate being used with the audit log service.
+
+        ##### Permissions
+        Must have `sysconsole_write_experimental_features` permission.
+
+        __Minimum server version__: 9.5
+      operationId: RemoveAuditLogCertificate
+      responses:
+        "200":
+          description: Certificate deletion successful
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/StatusOK"
+        "401":
+          $ref: "#/components/responses/Unauthorized"
+        "403":
+          $ref: "#/components/responses/Forbidden"
+        "501":
+          $ref: "#/components/responses/NotImplemented"