Data for meta reports (plus new tech dashboard)

[max-ostapenko]

Added meta data tables to be used in the Looker dashboards.

scratchspace.meta_crawl for HTTP Archive BigQuery Meta Dashboard

The reason is the speed and cost:

• materialised queries have limited SQL support,
• cache expires mush more often than the tables are updated,
• using INFORMATION_SCHEMA is incompatible with cache and materialisation
• after deprecating legacy tables I'd like to add a few more metrics from quality checks (and it will be a heavier query)

scratchspace.meta_technologies for HTTP Archive Technologies Detection Dashboard

The technologies dashboard can be used for maintenance of technology detection rules (as I wrote previously in HTTPArchive/wappalyzer#33)

Closes: HTTPArchive/wappalyzer#70

[max-ostapenko]

When we have the detection rules list in BQ (HTTPArchive/wappalyzer#34) I would join it to see which rules don't provide any detection, and thus waste the crawl resources and need to be fixed or removed.