♻️(frontend) switch to Authorization Code flow

Instead of interacting with Keycloak, the frontend navigate to the
/authenticate endpoint, which starts the Authorization code flow.

When the flow is done, the backend redirect back to the SPA,
passing a session cookie and a csrf cookie.

Done:
- Query GET user/me to determine if user is authenticated yet
- Remove Keycloak js dependency, as all the OIDC logic is handled by the backend
- Store user's data instead of the JWT token

src/frontend/yarn.lock

@@ -3899,11 +3899,6 @@ balanced-match@^2.0.0:
   resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-2.0.0.tgz#dc70f920d78db8b858535795867bf48f820633d9"
   integrity sha512-1ugUSr8BHXRnK23KfuYS+gVMC3LB8QGH9W1iGtDPsNWoQbgtXSExkBu2aDR4epiGWZOjZsj6lDl/N/AqqTC3UA==
 
-base64-js@^1.5.1:
-  version "1.5.1"
-  resolved "https://registry.yarnpkg.com/base64-js/-/base64-js-1.5.1.tgz#1b1b440160a5bf7ad40b650f095963481903930a"
-  integrity sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==
-
 boolbase@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/boolbase/-/boolbase-1.0.0.tgz#68dff5fbe60c51eb37725ea9e3ed310dcc1e776e"
@@ -6554,11 +6549,6 @@ jest@29.7.0:
     import-local "^3.0.2"
     jest-cli "^29.7.0"
 
-js-sha256@^0.10.1:
-  version "0.10.1"
-  resolved "https://registry.yarnpkg.com/js-sha256/-/js-sha256-0.10.1.tgz#b40104ba1368e823fdd5f41b66b104b15a0da60d"
-  integrity sha512-5obBtsz9301ULlsgggLg542s/jqtddfOpV5KJc4hajc9JV8GeY2gZHSVpYBn4nWqAUTJ9v+xwtbJ1mIBgIH5Vw==
-
 "js-tokens@^3.0.0 || ^4.0.0", js-tokens@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
@@ -6684,20 +6674,6 @@ jsonfile@^6.0.1:
     object.assign "^4.1.4"
     object.values "^1.1.6"
 
-jwt-decode@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/jwt-decode/-/jwt-decode-4.0.0.tgz#2270352425fd413785b2faf11f6e755c5151bd4b"
-  integrity sha512-+KJGIyHgkGuIq3IEBNftfhW/LfWhXUIY6OmyVWjliu5KH1y0fw7VQ8YndE2O4qZdMSd9SqbnC8GOcZEy0Om7sA==
-
-keycloak-js@23.0.6:
-  version "23.0.6"
-  resolved "https://registry.yarnpkg.com/keycloak-js/-/keycloak-js-23.0.6.tgz#a494cc1eddf5462322a9f2247b381bc22fb43747"
-  integrity sha512-Pn7iIEHPn7BcQFCbViKRv+8+v9l82oWNRVQr9wQGjp2BNEl9JpTsXjp84xQjwzaLKghG7QV7VwZrWBhiXJeM0Q==
-  dependencies:
-    base64-js "^1.5.1"
-    js-sha256 "^0.10.1"
-    jwt-decode "^4.0.0"
-
 keyv@^4.5.3, keyv@^4.5.4:
   version "4.5.4"
   resolved "https://registry.yarnpkg.com/keyv/-/keyv-4.5.4.tgz#a879a99e29452f942439f2a405e3af8b31d4de93"