Add Server Location Support

[rizaljamhari]

This MR adds support for displaying the server location(s) used by the speed test.

Changes

1. Data Model Updates

• SpeedData Interface (source/types.ts): Added a new field serverLocations of type string[]. This stores the list of server locations used for the test.

2. API Updates

• Scraping Logic: Updated the monitorSpeed function to scrape the #server-locations element from the page.
• Parsing: The text content is split by the | delimiter to handle multiple server locations, trimmed, and stored as an array.

3. UI Updates

• Verbose Output:
  • Displays multiple server locations separated by |.
• JSON Output:
  • Included the serverLocations array in the JSON output when the --json flag is used.

Example Verbose Output

Example JSON Output

{
	"downloadSpeed": 190,
	"downloadUnit": "Mbps",
	"downloaded": 190,
	"uploaded": 0,
	"latency": 226,
	"bufferBloat": 231,
	"userLocation": "Oregon, US",
	"serverLocations": [
		"Seattle, US",
		"San Jose, US"
	],
	"userIp": "1xx.xxx.xxx"
}