Support for tmpfs volume mounts

[chrisbbe]

Is your feature request related to a problem? Please describe.
Containers using tmpfs mounts can gain sustainable performance improvements.

Describe the solution you'd like
The option to specify the volume mount type for WithVolumeMount(...)

Additional context
This blog post describes a trick to use tmpfs volumes for PostgreSQL Docker containers in tests to achieve higher throughput, to achieve the same using testcontainers-dotnet, tmpfs volumes support is required.

[HofmeisterAn]

I assume we can add this with:

testcontainers-dotnet/src/Testcontainers/Configurations/Volumes/MountType.cs

Line 9 in 53d37fa

public readonly struct MountType