[client-v2] JDBC V2 Release

[Paultagoras]

### Tasks (0.8.0)
- [ ] https://github.com/ClickHouse/clickhouse-java/issues/1902
- [ ] https://github.com/ClickHouse/clickhouse-java/issues/1974
- [x] Version Matrix
- [ ] https://github.com/ClickHouse/clickhouse-java/issues/1985
- [ ] https://github.com/ClickHouse/clickhouse-java/issues/1975
- [ ] https://github.com/ClickHouse/clickhouse-java/issues/1973
- [ ] https://github.com/ClickHouse/clickhouse-java/issues/2021
- [ ] https://github.com/ClickHouse/clickhouse-docs/pull/3071
- [ ] https://github.com/ClickHouse/clickhouse-java/pull/2083

[mshustov]

Do these tasks belong to the current issue scope? https://github.com/ClickHouse/clickhouse-java/issues?q=is%3Aissue+is%3Aopen+label%3Ajdbc-v2

[Paultagoras]

#1977 is out of scope for now, but I've added #1973 to make it clearer