feat!(capture): add option to create entry ids

This un-breaks a breaking change where we addressed an issue that
prevented ids from being generated for 'entry' capture types.  While
this was a much-asked feature, the change also disrupted user workflows
that depend on the old behavior of entries creating org headings and
nothing more.

Users can now opt in to generating a heading id by passing
`:entry-node t` in their org-roam capture templates definition.

Amend: ed94524964

doc/org-roam.org

@@ -847,7 +847,9 @@ of the template are similar to ~org-capture~ templates.
    automatically chooses this template for you.
 2. The template is given a description of ~"default"~.
 3. ~plain~ text is inserted. Other options include Org headings via
-   ~entry~.
+   ~entry~. Note that ~entry~ type captures create regular Org headings
+   without IDs by default. To create an Org-roam node with an ID, use
+   the ~:entry-node t~ option.
 4. Notice that the ~target~ that's usually in Org-capture templates is missing
    here.
 5. ~"%?"~ is the template inserted on each call to ~org-roam-capture-~.
@@ -1221,6 +1223,10 @@ Here is a sane default configuration:
                             "#+title: %<%Y-%m-%d>\n"))))
 #+end_src
 
+Note: The ~entry~ type capture above creates a regular Org heading without an
+ID. If you want each daily entry to be an Org-roam node with its own ID, add
+~:entry-node t~ to the template.
+
 See [[*The Templating System][The Templating System]] for creating new templates.
 
 *** Usage