Add dot behavior to autocomplete

[gabrieldutra]

Description

A start on #3067 - Issues 1 and 2.
This changes the dot behavior when writing a query and start separating keyword types as Table Keyword, Column Keyword or Table-column Keyword

With that we separate 2 situations of autocomplete, instead of rendering the entire schema:

1. Default - Show table and distinct column names;
2. tableName. - Show specific Table columns.

This will probably improve the performance and be useful when we introduce aliases or query context.

Notes

Autocomplete not aware of the context (#3067 and #2329)

The dot by default breaks autocomplete words, so I changed its Regexp to include it.

Repeated suggestions when navigating through query pages

This seems to be something that could be affecting the performance.
Whenever would one navigate to a new query page, another completer would be added to langTools. I've changed addCompleter to setCompleters to fix this.

Preview

Before

After

To do

• Start it
• Test changes with a large schema and validate the performance
• Refactor QueryEditor constructor
• Refactor other QueryEditor methods? 🤔

We'll probably have some conflicts with #3091, but nothing huge.

Let me know your thoughts 😁

[gabrieldutra]

Was there a reason for those methods to be inside QueryEditor's constructor?

[arikfr]

🤷‍♂️

@washort ?

[gabrieldutra]

Well, I tested with a db schema with 10k tokensCount (twice the current limit of 5k) and I actually didn't have any performance issues neither before nor after these PR changes. I did notice a good change on the suggestions, but it's probably better to wait for other improvements before disabling the tokensCount rule.

LMK what you think 😁

[arikfr]

👍