add default for hockey league data['schedule']['home']

[alexindaco]

I was getting the following error when doing league = League(league_id=LEAGUE_ID, year=2022, swid=SWID, espn_s2=ESPN_S2, debug=True)

Traceback (most recent call last):
  File "main.py", line 11, in <module>
    f()
  File ".../espn-api/main.py", line 7, in f
    league = League(league_id=LEAGUE_ID, year=2022, swid=SWID, espn_s2=ESPN_S2, debug=True)
  File ".../espn-api/espn_apii/hockey/league.py", line 22, in __init__
    data = self._fetch_league()
  File ".../espn-api/espn_api/hockey/league.py", line 30, in _fetch_league
    self._map_matchup_ids(data['schedule'])
  File ".../espn-api/espn_api/hockey/league.py", line 39, in _map_matchup_ids
    scoring_periods = match['home'].get('pointsByScoringPeriod', {}).keys()
KeyError: 'home'

I noticed that the code for basketball leagues was doing match.get('home', {}) instead of match['home'], so i figured the same thing needed to happen here for hockey.

[cwendt94]

Thanks for the PR, I wonder if this was introduced when the NHL postponed/canceled some games.

[codecov-commenter]

Codecov Report

Merging #313 (b0f9862) into master (5fdf2d2) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #313   +/-   ##
=======================================
  Coverage   87.82%   87.82%           
=======================================
  Files          47       47           
  Lines        1643     1643           
=======================================
  Hits         1443     1443           
  Misses        200      200           

Impacted Files	Coverage Δ
espn_api/hockey/league.py	83.73% <100.00%> (ø)

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