Make use of Result types for internal control flow.

[Oberacda]

In the current library architecture, errors are managed with Exceptions sent over multiple call hierarchy layers. Similarly, function results need to be used properly. So, I propose a rework to use Rust style Result types using the result package.

[github-actions]

Test Results

 1 files   -   3  1 suites   - 3   2s ⏱️ -54s
16 tests  - 165  0 ✅  - 181  0 💤 ±0  0 ❌ ±0  16 🔥 +16 
16 runs   - 708  0 ✅  - 724  0 💤 ±0  0 ❌ ±0  16 🔥 +16 

For more details on these errors, see this check.

Results for commit c049162. ± Comparison against base commit 27dd929.

This pull request removes 181 and adds 16 tests. Note that renamed tests count towards both.

ros_bt_py.tests.nodes.test_wait.TestWait ‑ test_node_reset[0.05]
ros_bt_py.tests.nodes.test_wait.TestWait ‑ test_node_reset[1.0]
ros_bt_py.tests.nodes.test_wait.TestWait ‑ test_node_shutdown[0.05]
ros_bt_py.tests.nodes.test_wait.TestWait ‑ test_node_shutdown[1.0]
ros_bt_py.tests.nodes.test_wait.TestWait ‑ test_node_success[0.05]
ros_bt_py.tests.nodes.test_wait.TestWait ‑ test_node_success[1.0]
ros_bt_py.tests.nodes.test_wait.TestWaitInput ‑ test_node_reset[0.05]
ros_bt_py.tests.nodes.test_wait.TestWaitInput ‑ test_node_reset[1.0]
ros_bt_py.tests.nodes.test_wait.TestWaitInput ‑ test_node_shutdown[0.05]
ros_bt_py.tests.nodes.test_wait.TestWaitInput ‑ test_node_shutdown[1.0]
…

ros_bt_py ‑ tests.nodes.test_wait
ros_bt_py ‑ tests.ros_nodes.test_enum
ros_bt_py ‑ tests.ros_nodes.test_enum_fields
ros_bt_py ‑ tests.ros_nodes.test_fields_to_message
ros_bt_py ‑ tests.ros_nodes.test_message_from_dict
ros_bt_py ‑ tests.ros_nodes.test_message_from_dict_const
ros_bt_py ‑ tests.ros_nodes.test_message_to_fields
ros_bt_py ‑ tests.ros_nodes.test_ros_param_input
ros_bt_py ‑ tests.ros_nodes.test_ros_param_option
ros_bt_py ‑ tests.ros_nodes.test_ros_param_option_default_input
…

♻️ This comment has been updated with latest results.