Allow custom technology mapping for wappalyzer data

[Ice3man543]

Proposed changes

With a wappalyzer-mapping.yml file in nuclei-templates repository, it will be read when using auto-scan feature and will use custom mapping names.

Example file -

> ~/nuclei-templates: cat wappalyzer-mapping.yml
node.js: nodejs

echo https://example.com | ./nuclei -as -v -vv

                     __     _
   ____  __  _______/ /__  (_)
  / __ \/ / / / ___/ / _ \/ /
 / / / / /_/ / /__/ /  __/ /
/_/ /_/\__,_/\___/_/\___/_/   2.6.5

		projectdiscovery.io

[WRN] Use with caution. You are responsible for your actions.
[WRN] Developers assume no liability and are not responsible for any misuse or damage.
[INF] Using Nuclei Engine 2.6.5 (latest)
[INF] Using Nuclei Templates 8.9.4 (latest)
[INF] Templates added in last update: 20
[INF] Templates loaded for scan: 3120
[VER] Normalized mapping (1): map[node.js:nodejs]
[INF] Executing wappalyzer based tech detection on input URLs

Checklist

• Pull request is created against the dev branch
• All checks passed (lint, unit/integration/regression tests etc.) with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)