feat(tmpl): Introduce semantic HTML in forms

Modifies forms:

- (new) org team
- (new) repo webhook
- (new) repo protected branch

The forms are not completely rewritten to semantic HTML yet. The focus
of this change was on standard elements, some custom solutions were left
untouched for now.

- swaps the order fo permission radio buttons as per https://codeberg.org/forgejo/forgejo/issues/4983
- uses fieldsets to group related inputs
  - ensures consistent styling across forms
  - can be improved later, e.g. using horizontal lines between sections
- fixes: previous font size of labels was smaller than the font size of the help text
- help text are now part of the label, clicking them now also activates the input
- drop unused CSS (no required checkboxes in grouped class remain)
- playwright testing:
  - move login boilerplate to utils
  - automated form accessibility checking
    - allow defining the scope, because legacy parts of the forms are not yet accessible
  - assert some CSS properties that should not be overriden
- the Makefile adjustment was necessary, because eslint scanned some internal files in the tests/e2e/reports directory

Makefile

@@ -154,7 +154,7 @@ TAR_EXCLUDES := .git data indexers queues log node_modules $(EXECUTABLE) $(FOMAN
 GO_DIRS := build cmd models modules routers services tests
 WEB_DIRS := web_src/js web_src/css
 
-ESLINT_FILES := web_src/js tools *.js tests/e2e
+ESLINT_FILES := web_src/js tools *.js tests/e2e/*.js tests/e2e/shared/*.js
 STYLELINT_FILES := web_src/css web_src/js/components/*.vue
 SPELLCHECK_FILES := $(GO_DIRS) $(WEB_DIRS) docs/content templates options/locale/locale_en-US.ini .github $(wildcard *.go *.js *.md *.yml *.yaml *.toml)