[Feature] Add `exclude_titles` feature for enhanced window title exclusion

[0xErwin1]

This commit introduces the --exclude-titles argument to the aw-watcher-window module, allowing users to specify a list of window titles or regular expression patterns to exclude from tracking. This new feature is designed to complement the existing --exclude-title flag, providing enhanced flexibility for users who need to exclude multiple window titles without breaking compatibility with existing configurations.

Key Changes:

• Added the --exclude-titles argument to the argparse configuration in config.py, enabling the specification of multiple exclusion patterns.
• Updated the heartbeat_loop function in main.py to support both exclude_title and exclude_titles, with exclude_titles allowing for an array of titles to be excluded.
• Utilized the re module for regex pattern matching against window titles, ensuring case-insensitive comparisons.

This enhancement ensures that users can now more precisely control which window titles are excluded from tracking, making the aw-watcher-window module more versatile and user-friendly.

[0xErwin1]

I have been using this feature since I opened this PR and have not had any problems so far

[ErikBjare]

@ellipsis-dev Can you review this, and the re.escape part specifically? Doesn't it neuter actual regexes?

[ellipsis-dev[bot]]

@ErikBjare, I have addressed your comments in pull request https://github.com/ActivityWatch/aw-watcher-window/pull/102

[ErikBjare]

It seems Ellipsis wanted to put the compile in a try/except, which is probably a good idea (although it messed up the syntax). But, unlike what it did in its PR, it should print a warning if regex fails to compile (maybe even exit(1)), not silently escape the pattern.