Github templates

[rartych]

What type of PR is this?

• subproject management

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #63

Changelog input

Added Github templates for Issues and PRs

Additional documentation

Templates How-to

[bigludo7]

@jlurien I forget to mention this point yesterday but this is for alignment with Issue/PR CAMARA template. Thanks a lot @rartych for the quick contribution.

[rartych]

In order to fully support automatic issue labeling 2 labels need to be added (created): correction , subproject management.

(In Identity and Consent subprojects the label colors were set to #DB2F1F and #515C8B respectively)

[jlurien]

515C8B

Created