chore(dependencies): update JUnit to 5.12.2 using BOM

chore(dependencies): update JUnit to 5.12.2 using BOM

docs[http-requests]: add example environment and HTTP requests for Gitverse API

chore: add .env and target to .gitignore

chore: add JavaFormatter configuration for

chore: add Checkstyle configuration for Google Java style

feat!: change json lib

chore: fix lints problems

feat: basic implemetation gigachat api sdk

feat: create class for access token

chore!: remove App class

Запрос на слияние 'f/fetch-imoex' (#49) из f/fetch-imoex в main

fix: after code review

feat: fetch imoex weights from api

Запрос на слияние 'h/fetch-lotsize' (#47) из h/fetch-lotsize в develop

Запрос на слияние 'r/0.4.0' (#45) из r/0.4.0 в develop

chore: add test for getting access token

feat!: add method getting access token in GigaChatClient

chore: oathresponse utilite class for tests

feat!: add method for explicity refresh a token

chore: base url class for test

fix: after code review

feat!: add GigaChatClinet with basic test

chore(deps): add mockserver

chore: formatter for xml

feat: base java classes

chore: add vscode configs for this project