[Browser] Improve Canvas Query experience

[shahar-biron]

When searching for a value in the canvas, the results return for selection do not expose why they are a possible match for the query.
Task 1: add to the pop-up blocks the type of the entity, the specific attribute which matched and the attribute value with highlight of the prefix value that was matched.

Task2: consider allowing more complex query syntax such as:
<attribute_name>: prefix to search

so to filter just based on the name attribute
: Shah

And it will match the "Shah" substring only for the name attribute in the canvas.

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