Added naive implementation of priority queue

[czgdp1807]

References to other Issues or PRs or Relevant literature

#159

Brief description of what is fixed or changed

Other comments

[codecov]

Codecov Report

Merging #196 into master will increase coverage by 0.052%.
The diff coverage is 100.000%.

@@              Coverage Diff              @@
##            master      #196       +/-   ##
=============================================
+ Coverage   96.881%   96.933%   +0.052%     
=============================================
  Files           24        24               
  Lines         1828      1859       +31     
=============================================
+ Hits          1771      1802       +31     
  Misses          57        57               

Impacted Files	Coverage Δ
...astructs/miscellaneous_data_structures/__init__.py	100.000% <ø> (ø)
...datastructs/miscellaneous_data_structures/queue.py	100.000% <100.000%> (ø)