feat(chat): date format for messages and support for change placeholders

[piotrbrzuska]

Please read and mark the following check list before creating a pull request:

• I read and followed the CONTRIBUTING.md guide.
• I read and followed the New Feature Checklist guide.

Short description of what this resolves:

#1621

[PedroVieiraPQ]

Merge this, chat component is in the need of this changes

[darkzamuri]

i have this issue merge please 💃

[codecov]

Codecov Report

Merging #2227 into master will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2227      +/-   ##
==========================================
+ Coverage   81.51%   81.53%   +0.02%     
==========================================
  Files         244      244              
  Lines        7369     7377       +8     
  Branches      773      773              
==========================================
+ Hits         6007     6015       +8     
  Misses       1135     1135              
  Partials      227      227              

Impacted Files	Coverage Δ
...ework/theme/components/chat/chat-form.component.ts	53.84% <100.00%> (+1.46%)	⬆️
...eme/components/chat/chat-message-file.component.ts	42.10% <100.00%> (+3.21%)	⬆️
...heme/components/chat/chat-message-map.component.ts	81.81% <100.00%> (+1.81%)	⬆️
...me/components/chat/chat-message-quote.component.ts	100.00% <100.00%> (ø)
...eme/components/chat/chat-message-text.component.ts	100.00% <100.00%> (ø)
...rk/theme/components/chat/chat-message.component.ts	59.25% <100.00%> (+1.56%)	⬆️
.../framework/theme/components/chat/chat.component.ts	45.90% <100.00%> (+0.90%)	⬆️