Add recipes for denote and combobulate, Update recipes for Emacsql and Closql (#2902)

* Modify emacsql and closql recipes to use main

These repos have moved from using master to main as the default
branch.

* Add a recipe for mickeynp/combobulate

This is the excellent package aiming to bring paredit to all the
non-lispy languages using tree-sitter in Emacs.

* Add a recipe for ~protesilaos/denote

This is the cool new note-taking system which is simpler than roam and
depends on standard Unix tools.

recipes/closql.rcp

@@ -2,5 +2,6 @@
        :description "Store EIEIO objects using EmacSQL"
        :type github
        :pkgname "emacscollective/closql"
+       :branch "main"
        :minimum-emacs-version "25.1"
        :depends (esqlite))

recipes/combobulate.rcp

@@ -0,0 +1,6 @@
+(:name combobulate
+       :description "Structured Editing and Navigation in Emacs"
+       :type github
+       :pkgname "mickeynp/combobulate"
+       :load-path (".")
+       :minimum-emacs-version "29")

recipes/denote.rcp

@@ -0,0 +1,6 @@
+(:name denote
+       :description "Simple notes with an efficient file-naming scheme"
+       :type git
+       :url "https://git.sr.ht/~protesilaos/denote"
+       :load-path (".")
+       :minimum-emacs-version "28.1")

recipes/emacsql.rcp

@@ -1,5 +1,6 @@
 (:name emacsql
        :description "High-level SQL database front-end."
        :type github
+       :branch "main"
        :pkgname "skeeto/emacsql"
        :minimum-emacs-version "25.1")