Add tls support for mysql client

[db-will]

Close: #185

Add tls config for connecting mysql with tls enabled

Manually test:

[ec2-user@ip-10-0-19-25 cert]$ ./go-tpc -H 10.0.153.232 -U u1 -P 4000 tpcc --warehouses 1 prepare
2024/11/23 21:42:36 maxprocs: Leaving GOMAXPROCS=4: CPU quota undefined
failed to ping db, err Error 1045 (28000): Access denied for user 'u1'@'10.0.19.25' (using password: NO)
panic: failed to connect to database when loading data

goroutine 1 [running]:
github.com/pingcap/go-tpc/tpcc.NewWorkloader(0x59c338?, 0xc0003e9540?)
        /Users/Projects/db-will/go-tpc/tpcc/workload.go:110 +0x8bd
main.executeTpcc({0xb4c776, 0x7})
        /Users/Projects/db-will/go-tpc/cmd/go-tpc/tpcc.go:66 +0x205
main.registerTpcc.func1(0xc000144900?, {0xb49b4c?, 0x4?, 0xb49b50?})
        /Users/Projects/db-will/go-tpc/cmd/go-tpc/tpcc.go:96 +0x1f
github.com/spf13/cobra.(*Command).execute(0xc0003a9b88, {0xc00012a380, 0x8, 0x8})
        /Users/go/pkg/mod/github.com/spf13/cobra@v1.0.0/command.go:846 +0x671
github.com/spf13/cobra.(*Command).ExecuteC(0xc0003a9348)
        /Users/go/pkg/mod/github.com/spf13/cobra@v1.0.0/command.go:950 +0x389
github.com/spf13/cobra.(*Command).Execute(...)
        /Users/go/pkg/mod/github.com/spf13/cobra@v1.0.0/command.go:887
main.main()
        /Users/Projects/db-will/go-tpc/cmd/go-tpc/main.go:274 +0x846
[ec2-user@ip-10-0-19-25 cert]$ ./go-tpc -H 10.0.153.232 -U u1 -P 4000 --ssl-ca ./root.crt --ssl-cert ./client.crt --ssl-key ./client.key  tpcc --warehouses 1 clean
2024/11/23 21:42:54 maxprocs: Leaving GOMAXPROCS=4: CPU quota undefined
DROP TABLE IF EXISTS item
DROP TABLE IF EXISTS customer
DROP TABLE IF EXISTS district
DROP TABLE IF EXISTS history
DROP TABLE IF EXISTS new_order
DROP TABLE IF EXISTS order_line
DROP TABLE IF EXISTS orders
DROP TABLE IF EXISTS stock
DROP TABLE IF EXISTS warehouse
Finished

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