Dashoffset linetype (#260)

* Add demo and notebook.

* Update KDoc (`linetype descriptions`).

* Add missed changes.

* Update notebooks

---------

Co-authored-by: Olga Larionova <olarionova@horis.ru>

Author: IKupriyanov-HORIS

demo/jvm-batik/src/main/kotlin/frontendContextDemo/scripts/LineTypes.kt

@@ -0,0 +1,65 @@
+package frontendContextDemo.scripts
+
+import frontendContextDemo.ScriptInBatikContext
+import org.jetbrains.letsPlot.geom.geomSegment
+import org.jetbrains.letsPlot.intern.Plot
+import org.jetbrains.letsPlot.letsPlot
+import org.jetbrains.letsPlot.scale.scaleLinetypeIdentity
+import org.jetbrains.letsPlot.tooltips.tooltipsNone
+
+object LineTypes {
+    @JvmStatic
+    fun main(args: Array<String>) {
+        ScriptInBatikContext.eval("Line types") {
+
+            fun plot(linetypes: List<Any>): Plot {
+                val n = linetypes.size
+                val data = mapOf(
+                    "x" to List(n) { 0 },
+                    "xend" to List(n) { 1 },
+                    "y" to linetypes,
+                    "yend" to linetypes,
+                    "linetype" to linetypes
+                )
+
+                return letsPlot(data) +
+                        geomSegment(size = 3, tooltips = tooltipsNone) {
+                            x = "x"; y = "y"; xend = "xend"; yend = "yend"; linetype = "linetype"
+                        } +
+                        scaleLinetypeIdentity()
+            }
+
+            plot(
+                listOf(
+                    "solid",
+                    "dashed",
+                    "dotted",
+                    "dotdash",
+                    "longdash",
+                    "twodash"
+                )
+            ).show()
+
+            plot(
+                listOf(
+                    listOf(1, 1),
+                    listOf(5, 5),
+                    listOf(10, 5),
+                    5 to listOf(10, 5),
+                    listOf(5, 10, 1, 10),
+                    listOf(10, 5, 1, 5, 1, 5)
+                )
+            ).show()
+
+            plot(
+                listOf(
+                    "11",
+                    "55",
+                    "A5",
+                    "5A1A"
+                )
+            ).show()
+        }
+    }
+
+}