Added github templates

Author: roll

.github/issue_template.md

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+# Overview
+
+Please replace this line with full information about your idea or problem. If it's a bug please share as much as possible to reproduce it
+
+---
+
+Please preserve this line to notify the @frictionlessdata/php team

.github/pull_request_template.md

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+# Overview
+
+Please replace this line with full information about your pull request. Please make sure that tests pass before publishing it
+
+---
+
+Please preserve this line to notify the @frictionlessdata/php team

.github/stale.yml

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+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 90
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 30
+# Issues with these labels will never be considered stale
+exemptLabels:
+  - feature
+  - enhancement
+  - bug
+# Label to use when marking an issue as stale
+staleLabel: wontfix
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed if no further activity occurs. Thank you
+  for your contributions.
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false