qm.container: add tmpfs additional flags

[dougsland]

Resolves: #723

Summary by Sourcery

New Features:

• Adds support for specifying additional flags when mounting a tmpfs volume in a container.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request adds support for additional flags when mounting a tmpfs volume in a container. This allows users to customize the tmpfs mount options beyond the default settings.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Implemented the ability to specify additional flags for tmpfs mounts.	Added a new field to specify additional mount flags for tmpfs volumes. Modified the container creation logic to include the additional flags when mounting the tmpfs volume.	qm.container

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[sourcery-ai]

Hey @dougsland - I've reviewed your changes - here's some feedback:

Overall Comments:

• Could you add a brief explanation of the new flags and how they might be used?

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[pengshanyu]

I have tested it, we also need to add the following code:
Mount=type=tmpfs,destination=/dev/shm
otherwise the following issue will occur:
Error: failed to get new shm lock manager: failed to create 2048 locks in /libpod_lock: read-only file system