Add Emacs desktop provisioning and dev toolchain packages

Install Emacs and copy the desktop .emacs.d config so the editor setup is managed with the rest of desktop dotfiles. Add vterm/build/debug dependencies plus C/C++ and Go tooling needed by the configured workflow.

dotfiles/desktop/.emacs.d/snippets/org-mode/code

@@ -0,0 +1,5 @@
+#name : insert a Confluence code block
+# --
+{code}
+$0
+{code}

dotfiles/desktop/.emacs.d/snippets/org-mode/daily

@@ -0,0 +1,21 @@
+#name: daily
+# --
+* ❯ Admin, training & maintenance
+** DEVTR-1 Meetings, email, Slack++
+** DEVTR-5 System Maintenance
+** DEVTR-6 Software Delivery
+** DEVTR-8 Training
+
+* ❯ Coding
+
+* ❯ Review
+
+* ❯ Specification
+
+* ❯ Support
+** DEVTR-3 PSERV Assistance
+** DEVTR-5 Helping out colleagues in R&D
+
+* ❯ Report
+  #+BEGIN: clocktable :maxlevel 2
+  #+END:

dotfiles/desktop/.emacs.d/snippets/org-mode/gr

@@ -0,0 +1 @@
+** TODO DEVTR-44 Review - $0

dotfiles/desktop/.emacs.d/snippets/org-mode/q

@@ -0,0 +1,5 @@
+#name : insert a quote
+# --
+#+begin_quote
+$0
+#+end_quote

dotfiles/desktop/.emacs.d/snippets/org-mode/src

@@ -0,0 +1,5 @@
+#name : insert a source (BASH) declaration
+# --
+#+begin_src markdown
+$0
+#+end_src

dotfiles/desktop/.emacs.d/snippets/org-mode/title

@@ -0,0 +1 @@
+#+title: $0