Handling of incompatible plugins

[sanikolaev]

Think what we can do with things like this:

mysql> show version;
+-----------+--------------------------------+
| Component | Version                        |
+-----------+--------------------------------+
| Daemon    | 6.2.13 7e1e4f312@24021217 dev  |
| Columnar  | columnar 2.2.5 214ce90@240115  |
| Secondary | secondary 2.2.5 214ce90@240115 |
| KNN       | knn 2.2.5 214ce90@240115       |
| Buddy     | buddy v2.1.5                   |
+-----------+--------------------------------+
5 rows in set (0.00 sec)

mysql> show buddy plugins;
ERROR 1064 (42000): Class "UpdateText\Payload" not found

[donhardman]

While investigating the issue, I discovered a problem with the local plugin detection, which I've now resolved and pushed to the main branch. It's working fine for the show buddy plugins command, but we still need to think about how to implement versioning for older plugins and what steps to take. As of now, the show buddy plugins command should work perfectly.

[sanikolaev]

we still need to think about how to implement versioning for older plugins and what steps to take

OK, let's think. Since the main issue is solved, let's postpone this issue for a while.