Speedup tokenizer & parser

[MaxGraey]

trafficstars

Optimize tokenizer and parser.

Parser stage now faster by 14-15%.

Also tokenize ??, ??=, ||=, &&=

• [x] I've read the contributing guidelines
• [x] I've added my name and email to the NOTICE file

[dcodeIO]

You know what, if you say this is good, let's just do it this way :)

[github-actions[bot]]

This PR has been automatically marked as stale because it has not had recent activity. It will be closed in one week if no further activity occurs. Thank you for your contributions!

[github-actions[bot]]

This PR has been automatically closed due to lack of recent activity, but feel free to reopen it as long as you merge in the main branch afterwards.