Change CI to GitHub actions

Use copier template from oca/oca-addons-repo-template

Target Python3.7

Adapt modules to fix few issues

.copier-answers.yml

@@ -0,0 +1,26 @@
+# Do NOT update manually; changes here will be overwritten by Copier
+_commit: v1.14.1
+_src_path: https://github.com/OCA/oca-addons-repo-template.git
+ci: GitHub
+dependency_installation_mode: PIP
+generate_requirements_txt: true
+github_check_license: true
+github_ci_extra_env: {}
+github_enable_codecov: true
+github_enable_makepot: true
+github_enable_stale_action: true
+github_enforce_dev_status_compatibility: false
+include_wkhtmltopdf: false
+odoo_version: 12.0
+org_name: Camptocamp
+org_slug: camptocamp
+rebel_module_groups:
+- cloud_platform_exoscale
+- cloud_platform_ovh
+repo_description: null
+repo_name: Odoo Cloud Addons
+repo_slug: odoo-cloud-platform
+repo_website: https://github.com/camptocamp/odoo-cloud-platform
+travis_apt_packages: []
+travis_apt_sources: []
+