Start construction method list

Support-table.md

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+## References
+
+* [The geometry applet](https://mathcs.clarku.edu/~djoyce/java/Geometry/Geometry.html)
+* [Construction methods](https://mathcs.clarku.edu/~djoyce/java/Geometry/tables.html)
+
+## Construction methods
+
+### Point
+
+Construction method | Data | Support | Details
+---|---|---|---
+lineSlider | Line endpoints $A$, $B$; initial coordinates $(x, y, z)$ | On [`more-3d-gliders`](https://github.com/jsxgraph/jsxgraph/pull/649) | `let line = create('line3d', [A, B]);`<br>`create('point', [[x, y, z], line);`
+
+## Propositions
+
+Book | Proposition | Construction methods
+---|---|---
+[XII](https://mathcs.clarku.edu/~djoyce/java/elements/bookXII/bookXII.html) | [15](https://mathcs.clarku.edu/~djoyce/java/elements/bookXII/propXII15.html) | lineSlider…