Fix: Output a warning when the lattice vector is left-handed.

[sunliang98]

Reminder

• Have you linked an issue with this pull request?
• Have you added adequate unit tests and/or case tests for your pull request?
• Have you noticed possible changes of behavior below or in the linked issue?
• Have you explained the changes of codes in core modules of ESolver, HSolver, ElecState, Hamilt, Operator or Psi? (ignore if not applicable)

Linked Issue

Fix #4844

Unit Tests and/or Case Tests for my changes

• A unit test is added for each new feature or bug fix.

What's changed?

• Output a warning when the lattice vector is left-handed.
• What's more, when the lattice vector is left-handed, VASP would stop, while QE would warn the user and turn it to right-handed.

Any changes of core modules? (ignore if not applicable)

• Example: I have added a new virtual function in the esolver base class in order to ...

[sunliang98]

During testing, I noticed many cases use left-handed lattice vectors, and users might be relying on this as well. If the program quits due to a left-handed system, it could disrupt otherwise valid calculations.
As a result, I suggest issuing a warning but not terminating the program, turn the volume to positive and continue, similar to QE's approach. This alerts users without interrupting their workflows. @mohanchen