separate pyproject.toml for examples

examples/pyproject.toml

+                          [project]
+name = "orekit-jpype-example"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.10"
+dependencies = [
+    "ipython>=8.27.0",
+    "jupyterlab>=4.2.5",
+    "plotly>=5.24.0",
+    "orekitdata",
+    "numpy>=2.1.0",
+    "matplotlib>=3.9.2",
+    "cartopy>=0.23.0",
+    "orekit_jpype"
+]
+
+[tool.uv.sources]
+orekitdata = { git = "https://gitlab.orekit.org/orekit/orekit-data.git" }
+orekit_jpype = { workspace = true }
\ No newline at end of file