Add Sigma Detection Format schema to the catalog (#3455)

* feat: add sigma json schema

* Add descriptions and minor changes to sigma-1.0.json

* Update sigma-1.0.json

* Delete src/schemas/json/sigma-1.0.json

* Delete src/test/sigma-1.0/sigma-test.json

* Update catalog.json

* Update catalog.json

* Update catalog.json

---------

Co-authored-by: Émilio Gonzalez <[email protected]>

Author: nasbench

src/api/json/catalog.json

@@ -3727,6 +3727,12 @@
       ],
       "url": "https://raw.githubusercontent.com/hardisgroupcom/sfdx-hardis/main/config/sfdx-hardis.jsonschema.json"
     },
+    {
+      "name": "Sigma",
+      "description": "The Sigma detection format. More info at https://github.com/SigmaHQ/sigma-specification and https://github.com/SigmaHQ/sigma",
+      "fileMatch": ["**/sigma/**/*.yml"],
+      "url": "https://raw.githubusercontent.com/SigmaHQ/sigma-specification/main/sigma-schema.json"
+    },
     {
       "name": "Sigrid scope configuration file",
       "description": "Analysis scope configuration file used by Sigrid (sigrid-says.com)",