Add hover widget for version number in meta.lsx.

[Shresht7]

When hovering over the int64 version number in the meta.lsx file, the extension should parse the number and show the string equivalent.

[Shresht7]

Could take this opportunity to provide hover suggestions for the other stuff in meta.lsx.

for example explanations for the various attributes (with links?)

| Name of the mod author |
<attribute id="Author" type="LSWString" value="_____AUTHOR_____"/>