Post interval feature to avoid flooding

[rmdes]

1. Added an adaptive spacing feature controlled via new configuration fields.
2. Introduced new configuration options (adaptiveSpacing, spacingWindow, minSpacing, maxSpacing) in both the example configuration and README documentation
3. Extended the Config type with adaptive spacing fields to support the new logic
4. Implemented dynamic post spacing in the queue handler with delay calculation and helper functions

[milanmdev]

The edits look good overall, but could you clarify what exactly the spacingWindow sets, along with the min and max values? From what I understand, the min and max values define a range in seconds for posts to be spaced, which is then computed to a value, but I don't exactly understand what spacingWindow is doing.