Separate the Text node's generated glyphs into separate vector table rows (#2821)

* Separate glyphs into Vector data rows

* Fix `String Length` node

- Properly count characters with
`str.chars().count()` instead of bytes `str.len()`
- Change `String Length` node's output to `u32`

* Apply transform on instance instead of applying it when drawing the glyph

* Add checkbox to enable/disable per-glyph instances

* Tooltips

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Co-authored-by: Keavon Chambers <keavon@keavon.com>

node-graph/gcore/src/logic.rs

@@ -34,7 +34,7 @@ fn string_slice(_: impl Ctx, #[implementations(String)] string: String, start: f
 
 #[node_macro::node(category("Text"))]
 fn string_length(_: impl Ctx, #[implementations(String)] string: String) -> u32 {
-	string.len() as u32
+	string.chars().count() as u32
 }
 
 #[node_macro::node(category("Math: Logic"))]