Add caching and improve /tabs-counters performance

[nikitosing]

Motivation

Sometimes coin balances counter query consumes too much time
2023-09-17T08:36:27.886 application=explorer [info] Time consumed for coin_balances_count_task for 0x1b02dA8Cb0d097eB8D57A175b88c7D8b47997506 is 14084ms

Changelog

• Limit all queries with 1 second, and leave them after timeout untill completion (result will be stored in ets cache)
• Add ets cache for address tabs counters
• Remove coin balances counter from /tabs-counters endpoint
• Add ADDRESSES_TABS_COUNTERS_TTL env
  Add ADDRESSES_TABS_COUNTERS_TTL env docs#191

Checklist for your Pull Request (PR)

• I added an entry to CHANGELOG.md with this PR
• If I added new functionality, I added tests covering it.
• If I fixed a bug, I added a regression test to prevent the bug from silently reappearing again.
• I checked whether I should update the docs and did so by submitting a PR to https://github.com/blockscout/docs
• If I added/changed/removed ENV var, I submitted a PR to https://github.com/blockscout/docs to update the list of env vars at https://github.com/blockscout/docs/blob/master/for-developers/information-and-settings/env-variables.md and I updated the version to master in the Version column. Changes will be reflected in this table: https://docs.blockscout.com/for-developers/information-and-settings/env-variables.
• If I add new indices into DB, I checked, that they are not redundant with PGHero or other tools

[vbaranov]

Please add ADDRESSES_TABS_COUNTERS_TTL to common-blockscout.env and to the docs repo