Need a vimrc keylist and <A-key> bind description

[yunlongYoung]

Is your feature request related to a problem? Please describe.
When I input the ( [ {, the editor will automaticly generate the ) ] } for me. That is good.
Usually when I input all the thing in the brackets, there are two situations:

1. I wanna go to the next line, the I input <Esc>o, perfect for me.
2. I wanna input : or ; at end of line, then I should move fingers to arrowkey. That is tedious.

so I wanna to bind <A-l> to <right>, use this vimrc

    "vim.insertModeKeyBindingsNonRecursive": [

        {
            "before": [
                "<A-l>"
            ],
            "after": [
                "<Right>"
            ]
        },

No effect! I thought maybe it's not <Right>, maybe <RightArrow> or something else, so I need a keylist in vimrc.
So I searched in the google, wanna find a vimrc keylist. But for noob like me, it's difficult.
The key mapping is a import thing in vimrc, but I can not find the keylist, which I can use after "before" or `"after".

Then I read the README, found another method maybe works.
New vimrc:

    "vim.insertModeKeyBindingsNonRecursive": [

        {
            "before": [
                "<A-l>"
            ],
            "commands": [
                "cursorRight"
            ]
        },

I used a lot time on this, that is not environmentally friendly.

Finally, I used <CR> in vimrc to test:

    "vim.insertModeKeyBindingsNonRecursive": [

        {
            "before": [
                "<CR>"
            ],
            "after": [
                "<Right>"
            ]
        },

and

    "vim.insertModeKeyBindingsNonRecursive": [

        {
            "before": [
                "<CR>"
            ],
            "commands": [
                "cursorRight"
            ]
        },

They both work. Then I thought this is a bug, which vimrc won't work for <A-key>. Then I searched in the issue, find others' solution.
I did know that I need to bind Alt+ in the Setting:keybindings.

Describe the solution you'd like
maybe someone else want **a keylist or Alt key need bind in keybindings description in the README. **

[drpasionek]

I feel that this is related to: #2713

Definitely want to see alt+ key bindings, they are a huge part of my Vim bindings, and it's unfortunate I feel like I can't use VS Code the way I want because I so heavily rely on alt+ bindings.

[ownself]

This is an old topic, one day they do not support this, one day I won't try to use VSCode as my code editor....