gha: split lint jobs into multiple workflows

To allow for filtering/skipping of these using built-in syntax rather
than a 3rd-party action; the latter still requires to run the job.

Signed-off-by: Ivo Jimenez <ivo@redpanda.com>

.github/workflows/lint-cpp.yml

@@ -0,0 +1,44 @@
+name: Lint cpp
+
+on:
+  push:
+    branches:
+      - 'dev'
+    paths:
+      - '**.h'
+      - '**.cc'
+      - '**.cpp'
+      - '**.proto'
+      - '**.java'
+    tags-ignore:
+      - '**'
+  pull_request:
+    paths:
+      - '**.h'
+      - '**.cc'
+      - '**.cpp'
+      - '**.proto'
+      - '**.java'
+
+jobs:
+  cpp:
+    name: Lint files with clang-format
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Run clang-format
+      run: |
+        docker run \
+        -v $PWD:/redpanda ubuntu \
+        bash -c "cd /redpanda && \
+          apt update && \
+          apt install -y wget git lsb-release wget software-properties-common gnupg && \
+          wget https://apt.llvm.org/llvm.sh && \
+          chmod +x llvm.sh && \
+          ./llvm.sh 16 && \
+          apt-get install -y clang-format-16 && \
+          find . -type f -regex '.*\.\(cpp\|h\|hpp\|cc\|proto\|java\)' | xargs -n1 clang-format-16 -i -style=file -fallback-style=none"
+        git diff --exit-code

.github/workflows/lint-golang.yml

@@ -0,0 +1,65 @@
+name: Lint golang
+
+on:
+  push:
+    branches:
+      - 'dev'
+    paths:
+      - 'src/go/**'
+    tags-ignore:
+      - '**'
+  pull_request:
+    paths:
+      - 'src/go/**'
+
+jobs:
+  go:
+    name: Lint go files
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Setup go
+      uses: actions/setup-go@v3
+      with:
+        go-version: stable
+
+    - name: Run golangci-lint
+      uses: golangci/golangci-lint-action@v3
+      with:
+        version: latest
+        args: --timeout 5m
+        working-directory: src/go/rpk/
+
+    - name: Install gofumpt
+      env:
+        GOFUMPT_VER: 0.5.0
+      run: |
+        mkdir -v -p "$HOME/.local/bin"
+        wget -O "$HOME/.local/bin/gofumpt" "https://github.com/mvdan/gofumpt/releases/download/v${GOFUMPT_VER}/gofumpt_v${GOFUMPT_VER}_linux_amd64"
+        chmod 0700 "$HOME/.local/bin/gofumpt"
+
+    - name: Run gofumpt
+      run: |
+        find src/go -type f -not -name 'zz*' -name '*.go' | xargs -n1 "$HOME/.local/bin/gofumpt" -w -lang=1.20
+        git diff --exit-code
+
+    - name: go mod tidy (cluster-to-redpanda-migration)
+      working-directory: src/go/cluster-to-redpanda-migration
+      run: |
+        go mod tidy
+        git diff --exit-code -- go.mod go.sum
+
+    - name: go mod tidy (k8s)
+      working-directory: src/go/k8s
+      run: |
+        go mod tidy
+        git diff --exit-code -- go.mod go.sum
+
+    - name: go mod tidy (rpk)
+      working-directory: src/go/rpk
+      run: |
+        go mod tidy
+        git diff --exit-code -- go.mod go.sum

.github/workflows/lint-python.yml

@@ -0,0 +1,28 @@
+name: Lint python
+
+on:
+  push:
+    branches:
+      - 'dev'
+    paths:
+      - '**.py'
+    tags-ignore:
+      - '**'
+  pull_request:
+    paths:
+      - '**.py'
+
+jobs:
+  py:
+    name: Lint python files
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Install yapf
+      run: pip install yapf==0.40.1
+
+    - name: Run yapf
+      run: find . -type f -name '*.py' | xargs -n8 yapf -d

.github/workflows/lint-sh.yml

@@ -0,0 +1,33 @@
+name: Lint sh
+
+on:
+  push:
+    branches:
+      - 'dev'
+    paths:
+      - '**.sh'
+    tags-ignore:
+      - '**'
+  pull_request:
+    paths:
+      - '**.sh'
+
+jobs:
+  sh:
+    name: Lint shell scripts
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Install shfmt
+      env:
+        SHFMT_VER: 3.6.0
+      run: |
+        mkdir -v -p "$HOME/.local/bin"
+        wget -O "$HOME/.local/bin/shfmt" "https://github.com/mvdan/sh/releases/download/v${SHFMT_VER}/shfmt_v${SHFMT_VER}_linux_amd64"
+        chmod 0700 "$HOME/.local/bin/shfmt"
+
+    - name: Run shfmt
+      run: shfmt -i 2 -ci -s -d .