ci: 💚 consolidate github actions workflows (#47)

- make all main jobs as reusable workflows
- update used actions versions
- use golangci-lint action for linting

.github/workflows/go-build.yaml

@@ -0,0 +1,41 @@
+name: "Go: Build"
+on:
+  workflow_call: {}
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          cache: false
+          go-version-file: go.mod
+
+
+      - id: go-cache-paths
+        run: |
+          echo "go-build=$(go env GOCACHE)" >> $GITHUB_OUTPUT
+          echo "go-mod=$(go env GOMODCACHE)" >> $GITHUB_OUTPUT
+
+          mkdir -p "$(go env GOMODCACHE)"
+          mkdir -p "$(go env GOCACHE)"
+
+      - name: Go Build Cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.go-cache-paths.outputs.go-build }}
+          key: ${{ runner.os }}-gobuild-build-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-gobuild-build
+
+      - name: Go Mod Cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.go-cache-paths.outputs.go-mod }}
+          key: ${{ runner.os }}-gomod-build-${{ hashFiles('**/go.sum') }}
+
+      - run: |
+          go build -v .

.github/workflows/go-lint.yaml

@@ -0,0 +1,20 @@
+name: "Go: Lint"
+on:
+  workflow_call: {}
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          cache: false
+          go-version-file: go.mod
+
+
+      - name: Run golangci-lint
+        id: golangci-lint
+        uses: golangci/golangci-lint-action@v3

.github/workflows/go-test.yaml

@@ -0,0 +1,51 @@
+name: "Go: Test"
+on:
+  workflow_call: {}
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          cache: false
+          go-version-file: go.mod
+
+
+      - name: Determine Go Cache Paths
+        id: go-cache-paths
+        run: |
+          echo "go-build=$(go env GOCACHE)" >> $GITHUB_OUTPUT
+          echo "go-mod=$(go env GOMODCACHE)" >> $GITHUB_OUTPUT
+
+          mkdir -p "$(go env GOMODCACHE)"
+          mkdir -p "$(go env GOCACHE)"
+
+      - name: Go Build Cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.go-cache-paths.outputs.go-build }}
+          key: ${{ runner.os }}-gobuild-test-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-gobuild-test
+
+      - name: Go Mod Cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ steps.go-cache-paths.outputs.go-mod }}
+          key: ${{ runner.os }}-gomod-test-${{ hashFiles('**/go.sum') }}
+
+      - run: |
+          go test -v \
+            -coverprofile=coverage.txt \
+            -covermode=atomic \
+            -coverpkg=./... \
+            ./...
+
+      - name: Collect Code Coverage
+        uses: codecov/codecov-action@v2
+        with:
+          file: ./coverage.txt

.github/workflows/go.yaml

@@ -0,0 +1,20 @@
+name: Go
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  lint:
+    name: "Go: Lint"
+    uses: ./.github/workflows/go-lint.yaml
+
+  build:
+    name: "Go: Build"
+    uses: ./.github/workflows/go-build.yaml
+
+  test:
+    name: "Go: Test"
+    uses: ./.github/workflows/go-test.yaml
+
+    secrets: inherit

.github/workflows/markdown-lint.yaml

@@ -0,0 +1,14 @@
+name: "Markdown: Lint"
+on:
+  workflow_call: {}
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: markdownlint
+        uses: nosborn/github-action-markdown-cli@v2
+        with:
+            files: .

.github/workflows/markdown.yaml

@@ -0,0 +1,10 @@
+name: Markdown
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  lint:
+    name: "Markdown: Lint"
+    uses: ./.github/workflows/markdown-lint.yaml

.golangci.yml

@@ -0,0 +1,54 @@
+linters:
+  # Disable all default linters and enable only revive and formatters before
+  # new findings by default linters are addressed.
+  disable-all: true
+  enable:
+    - gofumpt
+    - goimports
+    - revive
+
+issues:
+  exclude-use-default: false
+
+linters-settings:
+  revive:
+    confidence: 0.8
+    ignore-generated-header: false
+    severity: error
+
+    rules:
+      - name: blank-imports
+      - name: confusing-naming
+      - name: confusing-results
+      - name: context-as-argument
+      - name: context-keys-type
+      - name: deep-exit
+      - name: dot-imports
+      - name: empty-block
+      - name: empty-lines
+      - name: error-naming
+      - name: error-return
+      - name: error-strings
+      - name: errorf
+      - name: exported
+      - name: get-return
+      - name: if-return
+      - name: import-shadowing
+      - name: increment-decrement
+      - name: indent-error-flow
+      - name: modifies-parameter
+      - name: modifies-value-receiver
+      - name: package-comments
+      - name: range
+      - name: receiver-naming
+      - name: redefines-builtin-id
+      - name: struct-tag
+      - name: superfluous-else
+      - name: time-naming
+      - name: unexported-return
+      - name: unnecessary-stmt
+      - name: unreachable-code
+      - name: unused-parameter
+      - name: unused-receiver
+      - name: var-declaration
+      - name: var-naming