Fix out-of-range panics of Date

[jevancc]

This Pull Request fixes/closes #1054

It changes the following:

• Add function time_clip
• Apply time_clip to methods of Date
• Add overflow checks when creating and setting Date

This PR resolves all known and unexplored out-of-range panics - more stable now. However, the test mentioned in the issue still failed. That is because the valid date range of chrono::naive::NaiveDate in Rust is smaller than the range of Date in JavaScript, which makes the behavior different.

[codecov]

Codecov Report

Merging #1075 (4b34f98) into master (1098b41) will increase coverage by 0.02%.
The diff coverage is 78.33%.

@@            Coverage Diff             @@
##           master    #1075      +/-   ##
==========================================
+ Coverage   58.68%   58.70%   +0.02%     
==========================================
  Files         176      176              
  Lines       12395    12407      +12     
==========================================
+ Hits         7274     7284      +10     
- Misses       5121     5123       +2     

Impacted Files	Coverage Δ
boa/src/builtins/date/mod.rs	67.88% <78.33%> (-0.20%)	⬇️
boa/src/realm.rs	87.50% <0.00%> (-5.36%)	⬇️
boa/src/builtins/mod.rs	21.21% <0.00%> (-2.32%)	⬇️
boa/src/builtins/string/string_iterator.rs	76.31% <0.00%> (-0.61%)	⬇️
boa/src/builtins/map/map_iterator.rs	69.64% <0.00%> (-0.54%)	⬇️
boa/src/builtins/array/array_iterator.rs	78.72% <0.00%> (-0.45%)	⬇️
boa/src/builtins/object/for_in_iterator.rs	77.77% <0.00%> (-0.41%)	⬇️
boa/src/builtins/iterable/mod.rs	91.66% <0.00%> (-0.34%)	⬇️
boa/src/value/mod.rs	73.68% <0.00%> (+0.24%)	⬆️
boa/src/object/internal_methods.rs	57.08% <0.00%> (+0.35%)	⬆️
... and 4 more

---

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[RageKnify]

2 less panics as expected.

Test262 conformance changes:

Test result	master count	PR count	difference
Total	78,497	78,497	0
Passed	24,805	24,805	0
Ignored	15,587	15,587	0
Failed	38,105	38,105	0
Panics	26	24	-2
Conformance	31.60	31.60	0.00%

[tofpie]

Looks good to me! Thanks!