Remove need for a clipboard & add wl-copy as a clipboard utility

Merged PRs by #2 and #5 to enable use of prelude on more systems and over ssh.

Only include Git files & enable case sensitive patterns

This release introduces the -g option that allows only including files tracked by git, if the folder you run Prelude in is a git repository.
It also adds the -c option, which will make -M match patterns case sensitive. Match patterns are still case insensitive by default.

Fixed bug where code would not concatenate

Fixed a bug that prevented code from concatenating.

Pattern matching option and tests

This release introduces the -M option allows you to include only files from the tree that match a pattern in the filename. Specify pattern(s) to match filenames. Uses tree's pattern matching syntax. For multiple patterns, separate them with '|'. Use '*' for wildcards. The matching is case-insensitive by default.

Prelude now also comes with tests to make sure everything is working as intended.

Initial release

Prelude is a very trivial command line tool to build large context prompts for LLMs, particularly for coding tasks.
It is meant to be used for copy-paste purposes, and there is no current plan for more fancy features.