CTRL-Q / CTRL-V blockwise-visual in Vi mode

Is your feature request related to a problem? Please describe.
CTRL-V starts blockwise-visual. CTRL-Q (now the VNote default key for quit) is an alternative to CTRL-V, since most of time CTRL-V is used to paste.
Vi help: :h ctrl-q

Blockwise-visual is intuitive for doing some job. Here is why it is important, basically essential to any level related syntax, e.g., mindmaps, headings, lists.

Goal:
Add a - before the existing - in multiple lines using Ctrl-V.

- item1
- item2
- item3
- item4
- item5

Steps:

1. Place the cursor at the start of the first -.
2. Press Ctrl-V to enter blockwise-visual mode.
3. Use j to select the same position in the lines below.
4. Press I (uppercase i), type -, and press Esc.
5. Your list will now have an additional - in each line.

Describe the solution you'd like
Support CTRL-V, at least CTRL-Q in Vi mode.

Describe alternatives you've considered
CTRL-Q is the last resort.

Additional context
Many requests on this one, like #2353 #1253 #1163 #912 #556

Start by locating Vi-mode key handling in the C++ VNote editor and reviewing the related issues #2353, #1253, #1163, #912, and #556. Done means Ctrl-V, or at least Ctrl-Q, enters blockwise-visual mode and supports the listed multi-line insertion workflow.