gitignore: tweaks [ci skip]

Removes the herb .gitignore previously removed in 7fab8be0dc, replacing
its contents with a cross-project ignore of Nix's 'result' symlink
artifact in the root .gitignore.

Moves some entries from the Vere .gitignore into the root file, as it
seems they can safely be assumed to be undesirable everywhere.

Also cleans up the root .gitignore, removing duplicate entries,
superfluous patterns, etc.

.gitignore

@@ -1,23 +1,44 @@
-/out
-/result
-/result-*
-/work
+# nix symlink artifacts
+#
+result
+result-*
+
+# common dev piers
+#
 /zod
 /bus
-/fakezod*
-tags
-TAGS
+/nec
+/fakezod
+
+# package manager caches
+#
+.stack-work
+node_modules
+
+# build and release artifacts
+#
 cross/
 release/
-.stack-work
-\#*\#
-s/*
-**/.DS_Store
-**/dist
-**/node_modules
-**/urbitrc
-**/*.swp
-**/*.swo
-**/*-min.js
-.stack-work
+dist
+/out
+/work
+
+# landscape dev
+#
+urbitrc
+*-min.js
 pkg/interface/link-webext/web-ext-artifacts
+
+# catchall editor and OS stuff
+#
+.tags
+.etags
+tags
+TAGS
+GPATH
+GRTAGS
+GTAGS
+.DS_Store
+*.swp
+*.swo
+

pkg/herb/.gitignore

@@ -1 +0,0 @@
-/result

pkg/urbit/.gitignore

@@ -8,17 +8,7 @@ include/config.h
 #
 *.o
 /build/*
-/tags
 #
 # Editor Bullshit
 #
-.tags
-TAGS
 cscope.*
-.DS_Store
-/.etags
-GPATH
-GRTAGS
-GTAGS
-*.swo
-*.swp