Rely on SPM plugins to consume SwiftLint and SwiftFormat

Use their latest releases and fix some violations and issues.

# Conflicts:
#	.github/workflows/linting.yml
#	.github/workflows/testing.yml

.github/workflows/deploying.yml

@@ -21,9 +21,8 @@ jobs:
     - name: Installing packages
       run: |
         brew update
-        brew install carthage swiftformat
+        brew install carthage
         brew install go || brew link --overwrite go
-        brew install swiftlint || brew link --overwrite swiftlint
         gem install bundler
     - uses: actions/cache@v3
       id: carthage-cache

.github/workflows/linting.yml

@@ -1,45 +0,0 @@
-name: Linting
-
-on: pull_request
-
-jobs:
-  swiftformat:
-    runs-on: macos-12
-    steps:
-    - uses: actions/checkout@v4
-    - uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: '2.7'
-        bundler-cache: true
-    - name: Installing packages
-      run: |
-        brew update
-        if brew ls --version swiftformat > /dev/null; then 
-          brew upgrade swiftformat
-        else
-          brew install swiftformat
-        fi
-    - name: Formatting code
-      run: |
-         swiftformat --lint .
-
-  swiftlint:
-    runs-on: macos-12
-    steps:
-    - uses: actions/checkout@v4
-    - uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: '2.7'
-        bundler-cache: true
-    - name: Installing packages
-      run: |
-        brew update
-        if brew ls --version swiftlint > /dev/null; then
-          brew upgrade swiftlint
-        else
-          # For some reason the SwiftLint binary is kept at its location after shutdown.
-          brew install swiftlint || brew link --overwrite swiftlint
-        fi
-    - name: Linting code
-      run: |
-         swiftlint --strict

.github/workflows/testing.yml

@@ -14,9 +14,8 @@ jobs:
     - name: Installing packages
       run: |
         brew update
-        brew install carthage swiftformat
-        brew install go@1.20 || brew link --overwrite go
-        brew install swiftlint || brew link --overwrite swiftlint
+        brew install carthage
+        brew install go || brew link --overwrite go
         gem install bundler
     - uses: actions/cache@v3
       id: carthage-cache