Add tasks for all the new languages

Task/Dynamic-variable-names/FreeBASIC/dynamic-variable-names.freebasic

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+' FB 1.05.0 Win64
+
+Type DynamicVariable
+  As String name
+  As String value
+End Type
+
+Function FindVariableIndex(a() as DynamicVariable, v as String, nElements As Integer) As Integer
+  v = LCase(Trim(v))
+  For i As Integer = 1 To nElements
+    If a(i).name = v Then Return i
+  Next
+  Return 0
+End Function
+
+Dim As Integer n, index
+Dim As String v
+Cls
+
+Do
+ Input "How many variables do you want to create (max 5) "; n
+Loop Until n > 0 AndAlso n < 6
+
+Dim a(1 To n) As DynamicVariable
+Print
+Print "OK, enter the variable names and their values, below"
+
+For i As Integer = 1 to n
+  Print
+  Print "  Variable"; i
+  Input "    Name  : ", a(i).name
+  a(i).name = LCase(Trim(a(i).name)) ' variable names are not case sensitive in FB
+  If i > 0 Then
+     index = FindVariableIndex(a(), a(i).name, i - 1)
+     If index > 0 Then
+       Print "  Sorry, you've already created a variable of that name, try again"
+       i -= 1
+       Continue For
+     End If
+  End If
+  Input "    Value : ", a(i).value
+  a(i).value = LCase(Trim(a(i).value))
+Next
+
+Print
+Print "Press q to quit"
+Do
+  Print
+  Input "Which variable do you want to inspect "; v
+  If v = "q" OrElse v = "Q" Then Exit Do
+  index = FindVariableIndex(a(), v, n)
+  If index = 0 Then
+    Print "Sorry there's no variable of that name, try again"
+  Else
+    Print "It's value is "; a(index).value
+  End If
+Loop
+End

Task/Dynamic-variable-names/Lasso/dynamic-variable-names.lasso

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+local(thename = web_request->param('thename')->asString)
+if(#thename->size) => {^
+	var(#thename = math_random)
+	var(#thename)
+else
+	'<a href="?thename=xyz">Please give the variable a name!</a>'
+^}

Task/Dynamic-variable-names/Lingo/dynamic-variable-names.lingo

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+-- varName might contain a string that was entered by a user at runtime
+
+-- A new global variable with a user-defined name can be created at runtime like this:
+(the globals)[varName] = 23 -- or (the globals).setProp(varName, 23)
+
+-- An new instance variable (object property) with a user-defined name can be created at runtime like this:
+obj[varName] = 23 -- or obj.setProp(varName, 23)

Task/Dynamic-variable-names/Oforth/dynamic-variable-names.oforth

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+: createVar(varname)
+   "tvar: " varname + eval ;
+
+"myvar" createVar
+
+12 myvar put
+myvar at .

Task/Dynamic-variable-names/Ring/dynamic-variable-names-1.ring

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+See "Enter the variable name: " give cName eval(cName+"=10")
+See "The variable name = " + cName + " and the variable value = " + eval("return "+cName) + nl

Task/Dynamic-variable-names/Ring/dynamic-variable-names-2.ring

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+Enter the variable name: test
+The variable name = test and the variable value = 10

Task/Dynamic-variable-names/Sidef/dynamic-variable-names.sidef

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+var name = read("Enter a variable name: ", String);     # type in 'foo'
+
+class DynamicVar(name, value) {
+    method init {
+        DynamicVar.def_method(name, ->(_) { value })
+    }
+}
+
+var v = DynamicVar(name, 42);       # creates a dynamic variable
+say v.foo;                          # retrieves the value