Rename Instances<T> to Table<T> and the "instance" terminology to "TableRow" and "element" (#2981)

* Instances -> Table

* instances.rs -> table.rs

* Rename occurrances of the word "instances"

* .instance -> .element

* Instance* -> TableRow*

* Rename Table and TableRow methods to not say "instance"

* Remove presumed unused serde defaults now that tables default to length 0 not 1

* Rename occurences of the word "instance"

* Un-alias the RasterDataTable<Storage>, VectorDataTable, GraphicGroupTable, ArtboardGroupTable typedefs

* Move artboard type and node code out of graphic_element.rs to a new artboard.rs

* Organize the TaggedValues

* Fix tests

* Fix prior regression with Image Value node not upgrading

node-graph/gstd/src/text.rs

@@ -1,7 +1,6 @@
-use crate::vector::VectorDataTable;
 use graph_craft::wasm_application_io::WasmEditorApi;
-use graphene_core::Ctx;
 pub use graphene_core::text::*;
+use graphene_core::{Ctx, table::Table, vector::VectorData};
 
 #[node_macro::node(category(""))]
 fn text<'i: 'n>(
@@ -29,10 +28,10 @@ fn text<'i: 'n>(
 	#[default(0.)]
 	tilt: f64,
 	align: TextAlign,
-	/// Splits each text glyph into its own instance, i.e. row in the table of vector data.
+	/// Splits each text glyph into its own row in the table of vector data.
 	#[default(false)]
 	per_glyph_instances: bool,
-) -> VectorDataTable {
+) -> Table<VectorData> {
 	let typesetting = TypesettingConfig {
 		font_size,
 		line_height_ratio,