feat: introduces a date-time-picker component

[kelsos]

Closes #(issue_number)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 6.17284% with 1368 lines in your changes missing coverage. Please review.

Project coverage is 58.64%. Comparing base (2243551) to head (7590ae7).

Files with missing lines	Patch %	Lines
.../components/date-time-picker/RuiDateTimePicker.vue	6.01%	766 Missing ⚠️
src/components/date-time-picker/timezones.ts	0.16%	597 Missing ⚠️
src/components/time-picker/RuiTimePicker.vue	88.88%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #348       +/-   ##
===========================================
- Coverage   69.87%   58.64%   -11.24%     
===========================================
  Files          83       85        +2     
  Lines        6908     8340     +1432     
  Branches     1021     1061       +40     
===========================================
+ Hits         4827     4891       +64     
- Misses       2081     3449     +1368     

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