Update CI to use contributte reusable workflows

- Replace monolithic main.yaml with separate workflow files
- Use contributte/.github reusable workflows for:
  - codesniffer.yml: Code style checks
  - phpstan.yml: Static analysis
  - tests.yml: PHPUnit tests (PHP 8.2, 8.3, 8.4, 8.5)
  - coverage.yml: Code coverage reporting
- Remove deprecated .coveralls.yml

Author: claude

.github/workflows/codesniffer.yml

@@ -0,0 +1,18 @@
+name: "Codesniffer"
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+  push:
+    branches: ["*"]
+
+  schedule:
+    - cron: "0 8 * * 1"
+
+jobs:
+  codesniffer:
+    name: "Codesniffer"
+    uses: contributte/.github/.github/workflows/codesniffer.yml@master
+    with:
+      php: "8.3"

.github/workflows/coverage.yml

@@ -0,0 +1,18 @@
+name: "Coverage"
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+  push:
+    branches: ["*"]
+
+  schedule:
+    - cron: "0 8 * * 1"
+
+jobs:
+  coverage:
+    name: "Nette Tester"
+    uses: contributte/.github/.github/workflows/nette-tester-coverage-v2.yml@master
+    with:
+      php: "8.3"

.github/workflows/main.yaml

@@ -0,0 +1,18 @@
+name: "Phpstan"
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+  push:
+    branches: ["*"]
+
+  schedule:
+    - cron: "0 8 * * 1"
+
+jobs:
+  phpstan:
+    name: "Phpstan"
+    uses: contributte/.github/.github/workflows/phpstan.yml@master
+    with:
+      php: "8.3"

.github/workflows/phpstan.yml

@@ -0,0 +1,36 @@
+name: "Tests"
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+  push:
+    branches: ["*"]
+
+  schedule:
+    - cron: "0 8 * * 1"
+
+jobs:
+  tests-82:
+    name: "Nette Tester (PHP 8.2)"
+    uses: contributte/.github/.github/workflows/nette-tester.yml@master
+    with:
+      php: "8.2"
+
+  tests-83:
+    name: "Nette Tester (PHP 8.3)"
+    uses: contributte/.github/.github/workflows/nette-tester.yml@master
+    with:
+      php: "8.3"
+
+  tests-84:
+    name: "Nette Tester (PHP 8.4)"
+    uses: contributte/.github/.github/workflows/nette-tester.yml@master
+    with:
+      php: "8.4"
+
+  tests-85:
+    name: "Nette Tester (PHP 8.5)"
+    uses: contributte/.github/.github/workflows/nette-tester.yml@master
+    with:
+      php: "8.5"