[GitConfig] Change gpg keys to be defined per computer

.gitignore

@@ -1,3 +1,4 @@
 .cache
 node_modules
 coding/.config/opencode/opencode-notifier-state.json
+coding/.gitconfig.local

coding/.gitconfig

@@ -1,7 +1,9 @@
+[include]
+	# Set commit signing here
+	path = ~/.gitconfig.local
 [user]
 	email = aaro@koivukangas.cc
 	name = Aaro Koivukangas
-	signingkey = 1EBCEEF2B53871F5
 [alias]
 	ci = commit
 	st = status
@@ -23,5 +25,3 @@
     conflictstyle = diff3
 [mergetool]
 	prompt = false
-[commit]
-	gpgsign = true

coding/.gitconfig.local.example

@@ -0,0 +1,4 @@
+[user]
+signingkey = abcdefg
+[commit]
+	gpgsign = true