Add clock sun record table

[damianooldoni]

This pull request includes several updates to the camtraptor package, primarily focusing on adding new columns to the get_record_table() output (see #341), updating the package version, and adding new tests to ensure the correctness of the new functionality.

Updates to get_record_table() function:

• get_record_table() now returns four new columns: longitude, latitude, clock (clock time in radians), and solar (solar time in radians).

Package version and dependency updates:

• Updated the package version from 0.26.0 to 0.27.0 in the DESCRIPTION file.
• Added activity (for getTime() used for clock column) and overlap (for sunTime() used for solar column) to the Imports section in the DESCRIPTION file.

New helper function:

• Introduced a new helper function add_coordinates() to add deployment coordinates to observations based on deploymentID.

New tests:

• Added tests to ensure warnings are returned if some observations have no timestamp, and to check that clock and solar values are always within the range [0, 2*pi].

[PietrH]

Cool new feature Damiano, well done!

[MartijnUH]

@damianooldoni works like a charm! I did not encounter any issues with setting up a pipeline for analyses of activity patterns (via activity), nor for the modelling of occupancy and/or abundance (via camtrapR and unmarked).