Implement the timestamp datatype for MySQL/MariaDB

[jonas-dongowski]

Describe the feature

Currently when trying to retrieve data from a table that contains a TIMESTAMP field, the following error is shown:
V panic: 'timestamp' is not yet implemented. Please create a new issue at https://github.com/vlang/v/issues/new

Use Case

There is software out there that is using the timestamp data type. To successfully integrate with their databases using V, this implementation is necessary.

Proposed Solution

Implement the timestamp datatype. Ideally with the ability to deal with such a value as a time.Time variable.

Other Information

I've tested using a MariaDB instance. It's possible that this fact lead to the issue as I've not tested using a MySQL instance.

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

Version used

jonas-dongowski@1359e9d

Environment details (OS name and version, etc.)

Docker version 20.10.13, build a224086

V full version: V 0.3.4 1be798b.3a09142
OS: linux, Linux version 5.10.16.3-microsoft-standard-WSL2 (oe-user@oe-host) (x86_64-msft-linux-gcc (GCC) 9.3.0, GNU ld (GNU Binutils) 2.34.0.20200220) #1 SMP Fri Apr 2 22:23:49 UTC 2021 (WSL 2)
Processor: 16 cpus, 64bit, little endian, AMD Ryzen 7 2700X Eight-Core Processor

getwd: /app
vexe: /opt/vlang/v
vexe mtime: 2023-05-22 07:28:00

vroot: OK, value: /opt/vlang
VMODULES: OK, value: /root/.vmodules
VTMP: OK, value: /tmp/v_0

Git version: git version 2.20.1
Git vroot status: weekly.2023.19-48-g3a09142a
.git/config present: true

CC version: cc (Debian 8.3.0-6) 8.3.0
thirdparty/tcc status: thirdparty-linux-amd64 12f392c3

[ghost]

Fixed in #18704