Improve PULL_REQUEST_TEMPLATE.md

[andersonjeccel]

Q	A
Bug fix? (use the a.b branch)	🔴
New feature/enhancement? (use the a.x branch)	🟢
Deprecations?	🔴
BC breaks? (use the c.x branch)	🔴
Automated tests included?	🔴
Related user documentation PR URL	mautic/user-documentation#...
Related developer documentation PR URL	mautic/developer-documentation-new#...
Issue(s) addressed	Fixes #...

Description

This PR improves the template used for new pull requests. Specifically:

• Adds emojis which can be used to fill the table answers (like the ones you're seeing here)
• Adds an optional table for Before/After
• Updates the documentation repositories URL
• Improves the description section

Before	After

---

📋 Steps to test this PR:

1. No testing needed?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.51%. Comparing base (4688a3c) to head (df6c17b).

Additional details and impacted files

@@            Coverage Diff            @@
##                5.x   #13727   +/-   ##
=========================================
  Coverage     61.51%   61.51%           
  Complexity    34068    34068           
=========================================
  Files          2241     2241           
  Lines        101852   101852           
=========================================
+ Hits          62650    62651    +1     
+ Misses        39202    39201    -1     

see 1 file with indirect coverage changes

[abhisekmazumdar]

The improved template looks easy to understand.

[npracht]

✅