feat: add colours to text output

[mkniewallner]

PR Checklist

• A description of the changes is added to the description of this PR.
• If there is a related issue, make sure it is linked to this PR.
• If you've fixed a bug or added code that should be tested, add tests!
• Documentation in docs is updated

Description of changes

Follow up on #357 to add colours to the terminal output, similarly to other tools like flake8, ruff or mypy.

A --no-ansi option is also added on the CLI to be able to disable this behaviour, for terminals that do not support ANSI characters, or if users want to opt-out from this.

On Windows, ANSI characters do not work out-of-the-box, so we leverage https://github.com/tartley/colorama to be able to display colours.

[codecov]

Codecov Report

Merging #368 (d863894) into main (eaf9546) will decrease coverage by 0.3%.
The diff coverage is 89.2%.

@@           Coverage Diff           @@
##            main    #368     +/-   ##
=======================================
- Coverage   96.8%   96.6%   -0.3%     
=======================================
  Files         37      37             
  Lines       1029    1040     +11     
  Branches     206     207      +1     
=======================================
+ Hits         997    1005      +8     
- Misses        20      22      +2     
- Partials      12      13      +1     

Impacted Files	Coverage Δ
deptry/imports/location.py	100.0% <ø> (ø)
deptry/cli.py	91.6% <40.0%> (-3.9%)	⬇️
deptry/core.py	98.0% <100.0%> (+<0.1%)	⬆️
deptry/reporters/text.py	100.0% <100.0%> (ø)
deptry/violations/misplaced_dev.py	100.0% <100.0%> (ø)
deptry/violations/missing.py	100.0% <100.0%> (ø)
deptry/violations/obsolete.py	100.0% <100.0%> (ø)
deptry/violations/transitive.py	100.0% <100.0%> (ø)