Added cursor line rendering to the Build Analyzer chart and fixed .env.example

[ElementUser]

Issue Link: #1806

Description of Changes

Added cursor line rendering to the Build Analyzer chart when a data point is selected (default value for this option is false when not specified)

• Also fixed an "Invalid URL" error when following the README instructions & running the application locally (by adding the BASE_URL field to .env.example)

==

This is how the Build Analyzer chart looks like after the change when hovering over the chart:

[ElementUser]

@Sendouc unfortunately, I don't know how to fix the original issue that the reporter reported in the linked issue (#1806), but I thought I would add the cursor lines since that was one of their requested "nice-to-have" features

[Sendouc]

Hmm I'm not convinced this is an improvement unfortunately. The issue you linked is specifically about plotting the current value. I disabled those lines on hover on the purpose as I find it's redundant with the tooltip.

About BASE_URL that's a valid point if following README instructions does not result in a working env! I will make another issue to explain a bit better what is wrong there (this value should be removed completely)

[Sendouc]

#1850 here