Add temporarily the option to use toolchains with _signed postfix

This is to fix an issue with ARM Mac toolchain for IDF v5.4

tools/gen_tools_json.py

@@ -27,8 +27,8 @@ def replace_if_xz(system):
     if not system['url'].endswith(".tar.xz"):
         return system
 
-    new_url = system['url'].replace(".tar.xz", ".tar.gz")
-    new_name = system['archiveFileName'].replace(".tar.xz", ".tar.gz")
+    new_url = system['url'].replace(".tar.xz", "_signed.tar.gz")
+    new_name = system['archiveFileName'].replace(".tar.xz", "_signed.tar.gz")
     new_checksum = ""
     new_size = 0
 
@@ -40,8 +40,16 @@ def replace_if_xz(system):
         (owner, proj, version, filename) = urlx[0]
         release_manifest_url = "https://github.com/%s/%s/releases/download/%s/%s-%s-checksum.sha256" % (owner, proj, version, proj, version)
     else:
-        print("No manifest match")
-        return system
+        new_url = system['url'].replace(".tar.xz", ".tar.gz")
+        new_name = system['archiveFileName'].replace(".tar.xz", ".tar.gz")
+        # parse the download url to extract all info needed for the checksum file url
+        urlx = re.findall("^https://github.com/([a-zA-Z0-9_-]+)/([a-zA-Z0-9_-]+)/releases/download/([a-zA-Z0-9_\-.]+)/([a-zA-Z0-9_\-.]+)$", new_url)
+        if urlx and len(urlx) > 0:
+            (owner, proj, version, filename) = urlx[0]
+            release_manifest_url = "https://github.com/%s/%s/releases/download/%s/%s-%s-checksum.sha256" % (owner, proj, version, proj, version)
+        else:
+            print("No manifest match")
+            return system
 
     # check if we have already downloaded and parsed that manifest
     manifest_index = 0