fix: revert bluetooth connection code

[totsteps]

Description

Changes the front page back to the bluetooth connection page
Adds output for angles set by joystick
Adds credits and instructions screens
Minor changes to layout and design

Related issue(s)

#23

[codecov-io]

Codecov Report

Merging #84 into master will decrease coverage by 0.3%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master      #84      +/-   ##
==========================================
- Coverage   11.58%   11.27%   -0.31%     
==========================================
  Files           7        7              
  Lines         328      337       +9     
  Branches       16       16              
==========================================
  Hits           38       38              
- Misses        289      298       +9     
  Partials        1        1

Impacted Files	Coverage Δ
...src/main/java/com/group10app/DeviceConnection.java	0% <0%> (ø)	⬆️

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