Use an opensource solution for Analytics

[ZibanPirate]

Description

use Plausible.io instead of Google Analytics

Check List

• Setup Plausible.io instance locally
• Deploy it to a VPS and link it to stats.dzcode.io
• Expose stats publicly?

Additional Comments

N/A

[ZibanPirate]

#654 will enable us to replace our analytics tools with Grafana Cloud's

[omdxp]

Another useful tool from grafana is k6 for load testing https://k6.io

[ZibanPirate]

with #656 we now are using grafana cloud (we are not self-hosting it thoe, we are using the managed version)

next step is to remove google analytics