* feat(repl): add postgres
* refactor(repl): change repl to use a single Run function
* test(repl): reduce usage of require.Eventually blocks
* refactor(repl): code review suggestions
* refactor(repl): code review suggestions
* test(repl): increase timeout values
* fix(repl): commands formatting
* refactor(repl): send close pgconn using a different context
* fix(repl): add proper spacing between multi queries
* test(repl): add fuzz test for processing commands