chore: remove committed binaries and fix .gitignore

- Add missing '*' ignore-all rule to .gitignore (was only a comment before)
- Remove accidentally committed Go build artifacts: config/fromtoml/example,
  http/cors/wthtimeout, http/group/group, http/sse/adhoc, http/static/example,
  http/withtimeout/wthtimeout, logx/fileconsole/example, logx/filterfields/example,
  logx/logrus/example, logx/tokafka/example, logx/zaplog/example,
  logx/zerolog/example, servicegroup/servicegroup

Author: kevwan

.gitignore

@@ -1,4 +1,5 @@
 # Ignore all
+*
 
 # Unignore all with extensions
 !*.*