Fix plugin loader to correctly activate plugins

[fernandodpr]

It fixes a bug on my previous pr.

The bug was caused by the plugin loader not correctly using the plugin_name attribute to identify plugins when matching them with their configurations in config.yaml. Instead, it was using the class name or other identifiers that didn't align with the names specified in the configuration file. This mismatch meant that plugins, especially community plugins, were not being recognized and thus not activated as intended.

Changing the plugin loader to utilize the plugin_name attribute defined within each plugin fixed the problem.

And a typo, thank you @jeremiah-k .

[fernandodpr]

Logs to make review easier. Here we can see how It loads nodediscovery and helloworld correctly.

python main.py
HEAD is now at 84f63d1 Hello_world plugin to test the new plugin loader
From https://github.com/fernandodpr/MMR-NodeDiscovery-Plugin
 * tag               DEV        -> FETCH_HEAD
Already up to date.
2024-11-07 23:26:27 +0100 INFO:Plugins:Updated repository MMR-NodeDiscovery-Plugin to DEV
HEAD is now at 84f63d1 Hello_world plugin to test the new plugin loader
From https://github.com/fernandodpr/MMR-NodeDiscovery-Plugin
 * tag               DEV        -> FETCH_HEAD
Already up to date.
2024-11-07 23:26:28 +0100 INFO:Plugins:Updated repository MMR-NodeDiscovery-Plugin to DEV
2024-11-07 23:26:28 +0100 DEBUG:Plugin:health:Started with priority=10
2024-11-07 23:26:28 +0100 DEBUG:Plugin:map:Started with priority=10
2024-11-07 23:26:28 +0100 DEBUG:Plugin:mesh_relay:Started with priority=10
2024-11-07 23:26:28 +0100 DEBUG:Plugin:ping:Started with priority=10
2024-11-07 23:26:28 +0100 DEBUG:Plugin:telemetry:Started with priority=10
2024-11-07 23:26:28 +0100 DEBUG:Plugin:weather:Started with priority=10
2024-11-07 23:26:28 +0100 DEBUG:Plugin:help:Started with priority=10
2024-11-07 23:26:28 +0100 DEBUG:Plugin:nodes:Started with priority=10
2024-11-07 23:26:28 +0100 INFO:Plugins:Plugin 'drop' is inactive or not configured, skipping
2024-11-07 23:26:28 +0100 DEBUG:Plugin:debug:Started with priority=1
2024-11-07 23:26:28 +0100 DEBUG:Plugin:helloworld:Started with priority=10
2024-11-07 23:26:28 +0100 DEBUG:Plugin:nodediscovery:Started with priority=10
2024-11-07 23:26:28 +0100 INFO:Meshtastic:Connecting to host 192.168...