Improve embedded subheading re-naming

[WhiteNoise]

Automatic/inline update of links to headers and blocks when they are modified (no extra dialog window)

Currently to propagate the change of header text to header links, an explicit user interaction is needed that involves opening a modal window. It would be great if this change is detected automatically/inline and no explicit user action/dialog is necessary. A related FR that is similar to implement: This is something that more realistically can be implemented: https://forum.obsidian.md/t/add-markers-in-the-gutter-for-headings-and-blocks-that-are-referenced-somewhere-else/37708

Add counters/markers for headings and blocks that are referenced somewhere else

It would be helpful to have some visual indication when a heading or block is referenced somewhere else in the vault (and possibly how many times). This is particularly important as a signal for the user to manually trigger the “rename header” functionality (and the upcoming rename block). A marker in the gutter could serve this purpose. The third party plugins “Strange New Worlds” and “Block-reference-count” implement similar functionality.