refactor: html5 server log improvements

[ramonlsouza]

What does this PR do?

Makes the following changes so it becomes easier to monitor the health of the html5 servers:

• adds timestamp and information about server instance to server logs
• adds a new log message with cpu/memory usage for each server

Current

info : Added presentation id=8ed482ae3f9e099142b9a939c663d0ee41e66cc9-1663336566249 meeting=197cc79b2223ce7871d7059d9b990a127aecd8df-1663336566196 {}

After changes

2022-09-16T13:56:13.306Z backend-1 [info] : Added presentation id=8ed482ae3f9e099142b9a939c663d0ee41e66cc9-1663336566249 meeting=197cc79b2223ce7871d7059d9b990a127aecd8df-1663336566196 {}

server health log message

2022-09-16T13:22:04.818Z frontend 1 [info] : Server health {"memoryUsage":{"rss":"111.24 MB","heapTotal":"59.7 MB","heapUsed":"55.67 MB","external":"23.42 MB"},"cpuUsage":{"system":"0.17 MB","user":"2.88 MB"}}

[sonarcloud]

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0 Bugs
0 Vulnerabilities
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No Coverage information
0.0% Duplication

[prlanzarin]

adds a new log message with cpu/memory usage for each server

FYI an alternative that is independent of logging and gives more operational metrics

bigbluebutton/bigbluebutton-html5/private/config/settings.yml

Lines 892 to 893 in 11711fb

	# Whether default metrics for Node.js processes should be exported
	collectDefaultMetrics: false