Adds ParseLogs

[montymxb]

This adds ParseLogs to allow reading of parse's server-side logs in a read-only fashion. The endpoint utilized is the same that provides the logs for the dashboard. Logs are returned as an array of log entries, making parsing of log info conveniently accessible from this sdk.

Logs can be retrieved like so.

// get last 100 info logs, sorted in descending order
$logs = ParseLogs::getInfoLogs();

// get last 100 info logs, sorted in descending order
$logs = ParseLogs::getErrorLogs();

// logs can be retrieved with further specificity
// get 10 logs from a date up to a date in ascending order
$logs = ParseLogs::getInfoLogs(10, $fromDate, $untilDate, 'asc');

// above can be done for 'getErrorLogs' as well

[codecov]

Codecov Report

Merging #370 into master will increase coverage by 0.04%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #370      +/-   ##
==========================================
+ Coverage   98.93%   98.98%   +0.04%     
==========================================
  Files          36       37       +1     
  Lines        3389     3455      +66     
==========================================
+ Hits         3353     3420      +67     
+ Misses         36       35       -1

Impacted Files	Coverage Δ
src/Parse/HttpClients/ParseStreamHttpClient.php	98.93% <100%> (+0.97%)	⬆️
src/Parse/ParseLogs.php	100% <100%> (ø)
src/Parse/ParseConfig.php	100% <0%> (ø)	⬆️
src/Parse/ParseSession.php	100% <0%> (ø)	⬆️
src/Parse/ParseUser.php	98.51% <0%> (+0.05%)	⬆️

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