Add ToB Semgrep Rules (#26821)

* add tob goroutine rule for pr scanning

* add tob racy slice and map rules

---------

Co-authored-by: mickael e <[email protected]>

Author: ccapurso

scan.hcl

@@ -15,7 +15,13 @@ repository {
   plugin "semgrep" {
     use_git_ignore = true
     exclude = ["vendor"]
-    config = ["tools/semgrep/ci", "p/r2c-security-audit"]
+    config = [
+      "tools/semgrep/ci",
+      "p/r2c-security-audit",
+      "r/trailofbits.go.hanging-goroutine.hanging-goroutine",
+      "r/trailofbits.go.racy-append-to-slice.racy-append-to-slice",
+      "r/trailofbits.go.racy-write-to-map.racy-write-to-map",
+    ]
     exclude_rule = ["generic.html-templates.security.unquoted-attribute-var.unquoted-attribute-var"]
   }