feat: added truncation_length/symbol to git_branch (#268)

Git branches can become very long (e.g. gitlab auto-generated branch
names), thus it would be nice to be able to truncate them to keep your
prompt lenght in line.

This patch adds two new options to the git_branch module:
* truncation_length: The amount of graphemes to of a gitbranch to
truncate to
* truncation_symbol: The symbol that should be used to indicate that a
branch name was trunctated

To be able to correctly work with UTF-8 graphemes, unicode-segmentation
was added as a dependency.

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/testsuite/main.rs b/tests/testsuite/main.rs
index ed0289835..cd96b8e85 100644
--- a/tests/testsuite/main.rs
+++ b/tests/testsuite/main.rs
@@ -3,6 +3,7 @@ mod cmd_duration;
 mod common;
 mod configuration;
 mod directory;
+mod git_branch;
 mod git_status;
 mod golang;
 mod jobs;