Added LineEdit setter/getter example

tutorial/examples/README.md

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+## TTkLineEdit
+### Set/Get Text
+[TTkLineEdit/SetGet.01.py](TTkLineEdit/SetGet.01.py)
+### Events
+TBD
+## TTkTextEdit
+### Set/Get/Append Text
+TBD
+### Export
+TBD

tutorial/examples/TTkLineEdit/SetGet.01.py

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+#!/usr/bin/env python3
+
+# MIT License
+#
+# Copyright (c) 2023 Eugenio Parodi <ceccopierangiolieugenio AT googlemail DOT com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+# Those 2 lines are required to use the TermTk library straight from the main folder
+import sys, os
+sys.path.append(os.path.join(sys.path[0],'../../..'))
+
+import TermTk as ttk
+
+root=ttk.TTk()
+
+le1 = ttk.TTkLineEdit(parent=root, pos=(2,2), size=(20,1))
+le1.setText("This is a Test")
+
+txt = le1.text()
+
+le2 = ttk.TTkLineEdit(parent=root, pos=(2,5), size=(20,1))
+le2.setText(txt)
+
+root.mainloop()