Update and expand unimportant file lists (#677)

Author: StanFromIreland

master/master.cfg

@@ -184,19 +184,27 @@ cpulock = locks.WorkerLock(
 
 def is_important_file(filename):
     unimportant_prefixes = (
+        ".azure-pipelines/",
+        ".devcontainer/"
         ".github/",
-        ".gitignore",
-        ".vsts",
-        "Misc/",
+        ".well-known/",
         "Doc/",
-        "Demo/",
+        "InternalDocs/",
+        "Misc/",
+        ".coveragerc",
+        ".editorconfig",
+        ".gitattributes",
+        ".gitignore",
+        ".mailmap",
+        "LICENSE"
     )
     unimportant_suffixes = (
         ".md",
         ".rst",
         ".yml",
         ".yaml",
         "README",
+        "ruff.toml",
     )
     if filename.lstrip("\\/").startswith(unimportant_prefixes):
         return False