misc: gitlint: allow well-known commit tags to exceed line limit

To get that list, I've used

```
git log | grep --fixed-strings -- "-by:" | head -n 100000 | sort | less
```

on the Linux kernel's git repository.

Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
On-behalf-of: SAP philipp.schuster@sap.com

scripts/gitlint/rules/BodyMaxLineLengthEx.py

@@ -4,6 +4,30 @@ from gitlint.rules import LineRule, RuleViolation, CommitMessageBody
 import re
 
 
+IGNORE_PREFIXES = [
+    # Please sort alphabetically
+    "Acked-by: ",
+    "Co-authored-by: ",
+    "Co-developed-by: ",
+    "Debugged-by: ",
+    "Diagnosed-by: ",
+    "Explained-by: ",
+    "Fixed-by: ",
+    "Fixes: ",
+    "Helped-by: ",
+    "Inspired-by: ",
+    "On-behalf-of: ",
+    "Originally-by: ",
+    "Reported-by: ",
+    "Reviewed-and-tested-by: ",
+    "Reviewed-by: ",
+    "Signed-off-by: ",
+    "Suggested-by: ",
+    "Tested-by: ",
+    "Triggered-by: ",
+]
+
+
 class BodyMaxLineLengthEx(LineRule):
     """A rule to enforce a line limit of 72 characters, except for valid cases."""
 
@@ -44,6 +68,11 @@ class BodyMaxLineLengthEx(LineRule):
             if is_link:
                 return
 
+            # Don't check lines with allowed prefixes
+            for prefix in IGNORE_PREFIXES:
+                if line.startswith(prefix):
+                    return None
+
             return [
                 RuleViolation(self.id, f"Line '{line}' exceeds limit of {self.max_len}")
             ]