chore: Cleanup .gitignore

And split it across multiple files.

.gitignore

@@ -1,17 +1,12 @@
+# Generated by Cargo
+# will have compiled files and executables
 target/
+
+# These are backup files generated by rustfmt
 **/*.rs.bk
-bin/
-dist/
-pkg/
-web/packages/core/docs
-web/packages/core/tsd
+
+# SWF debug symbols
 *.swd
 
-# NPM
-_cacache/
-_logs/
-anonymous-cli-metrics.json
-node_modules/
-
-# Flash
+# Flash recovery files
 RECOVER_*.fla

web/.gitignore

@@ -0,0 +1,11 @@
+node_modules/
+dist/
+
+_cacache/
+_logs/
+anonymous-cli-metrics.json
+
+/npm-debug.log*
+/lerna-debug.log*
+
+/package.json.lerna_backup

web/packages/core/.gitignore

@@ -0,0 +1,3 @@
+/pkg/
+/docs/
+/tsd/