MySQL Heatwave TPROC-H support

[mprostko]

Closes #482

This PR adds MySQL Heatwave data generation and benchmarking support.

[sm-shaw]

This runs fine on a regular MySQL instance but prints an error that says the performance_schema.rpd_table_id does not exist when identifying the storage engine.
Request an update to fall back to query information_Schema.tables in case the first query fails. An example I have tested with the preferred outcome is below.

if { [ tsv::get application abort ] } { break }

catch {set engine [ join [ mysql::sel $mysql_handler "SELECT case when count(NAME) = 8 then 'Heatwave' else 'InnoDB' end as hw_loaded_all FROM performance_schema.rpd_table_id where NAME like '$db.%'" -list ] ]}
if { $mysqlstatus(code)  } {
catch {set engine [  join [ mysql::sel $mysql_handler  "select distinct(engine) from information_Schema.tables where table_schema = '$db'" -list] ]}
}
if { $mysqlstatus(code)  } {
set engine ""
}

set start [ clock seconds ]

[mprostko]

@sm-shaw code updated

[sm-shaw]

Have retested after changes on an innodb storage engine installation and build and test runs without warning messages