Add pull request and issue templates (cvat-ai#1359)

* Add initial version of pull request template

* Fix links

* Fix codacy issues

* Slightly improve titles of sections

* Add a note about strikethough for the checklist.

* Fix progress of a pull request (each checkbox is an issue)

* Add the license header, checkboxes about the license.

* Updated the license

* Update the license to met https://github.com/licensee/licensee/blob/master/vendor/choosealicense.com/_licenses/mit.txt restrictions.

* Fix the pull request template name

* Make explaination text as comments (it will be visible when you edit the PR message)

* Add initial version of the issue template.

.vscode/launch.json

@@ -27,7 +27,7 @@
  "request": "launch",
  "stopOnEntry": false,
  "justMyCode": false,
- "pythonPath": "${config:python.pythonPath}",
+ "pythonPath": "${command:python.interpreterPath}",
  "program": "${workspaceRoot}/manage.py",
  "args": [
  "runserver",
@@ -58,7 +58,7 @@
  "request": "launch",
  "stopOnEntry": false,
  "justMyCode": false,
- "pythonPath": "${config:python.pythonPath}",
+ "pythonPath": "${command:python.interpreterPath}",
  "program": "${workspaceRoot}/manage.py",
  "args": [
  "rqworker",
@@ -77,7 +77,7 @@
  "request": "launch",
  "stopOnEntry": false,
  "justMyCode": false,
- "pythonPath": "${config:python.pythonPath}",
+ "pythonPath": "${command:python.interpreterPath}",
  "program": "${workspaceRoot}/manage.py",
  "args": [
  "rqscheduler",
@@ -93,7 +93,7 @@
  "request": "launch",
  "justMyCode": false,
  "stopOnEntry": false,
- "pythonPath": "${config:python.pythonPath}",
+ "pythonPath": "${command:python.interpreterPath}",
  "program": "${workspaceRoot}/manage.py",
  "args": [
  "rqworker",
@@ -112,7 +112,7 @@
  "request": "launch",
  "justMyCode": false,
  "stopOnEntry": false,
- "pythonPath": "${config:python.pythonPath}",
+ "pythonPath": "${command:python.interpreterPath}",
  "program": "${workspaceRoot}/manage.py",
  "args": [
  "update_git_states"
@@ -128,7 +128,7 @@
  "request": "launch",
  "justMyCode": false,
  "stopOnEntry": false,
- "pythonPath": "${config:python.pythonPath}",
+ "pythonPath": "${command:python.interpreterPath}",
  "program": "${workspaceRoot}/manage.py",
  "args": [
  "migrate"
@@ -144,7 +144,7 @@
  "request": "launch",
  "justMyCode": false,
  "stopOnEntry": false,
- "pythonPath": "${config:python.pythonPath}",
+ "pythonPath": "${command:python.interpreterPath}",
  "program": "${workspaceRoot}/manage.py",
  "args": [
  "test",