Basic project creation (#3)

This PR contains the work done to create a new *Hummingbird* project with very basic configuration from the _colibri_ executable, just like the project you could create with the [Hummingbird template](https://github.com/hummingbird-project/template) project in Github.

Reviewed-on: #3
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

Library/Sources/Internal/Extensions/Bundle+Conformances.swift

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+import Foundation
+
+// MARK: - Bundleable
+
+extension Bundle: Bundleable {}

Library/Sources/Internal/Extensions/Pipe+Properties.swift

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+import Foundation
+
+extension Pipe {
+    
+    // MARK: Computed
+    
+    var availableData: AsyncAvailableData { .init(self) }
+    
+}
+
+// MARK: - AsyncAvailableData
+
+extension Pipe {
+    struct AsyncAvailableData {
+        
+        // MARK: Properties
+        
+        private let pipe: Pipe
+        
+        // MARK: Initialisers
+        
+        init(_ pipe: Pipe) {
+            self.pipe = pipe
+        }
+        
+        // MARK: Functions
+        
+        func append() async -> Data {
+            var data = Data()
+            
+            for await availableData in self {
+                data.append(availableData)
+            }
+            
+            return data
+        }
+        
+    }
+}
+
+// MARK: - AsyncSequence
+
+extension Pipe.AsyncAvailableData: AsyncSequence {
+    
+    // MARK: Type aliases
+    
+    typealias AsyncIterator = AsyncStream<Data>.Iterator
+    typealias Element = Data
+    
+    // MARK: Functions
+    
+    func makeAsyncIterator() -> AsyncIterator {
+        AsyncStream { continuation in
+            pipe.fileHandleForReading.readabilityHandler = { @Sendable handler in
+                let data = handler.availableData
+                
+                guard !data.isEmpty else {
+                    continuation.finish()
+                    return
+                }
+                
+                continuation.yield(data)
+            }
+            
+            continuation.onTermination = { _ in
+                pipe.fileHandleForReading.readabilityHandler = nil
+            }
+        }
+        .makeAsyncIterator()
+    }
+    
+}

Library/Sources/Internal/Extensions/Process+Conformances.swift

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+import Foundation
+
+// MARK: - Processable
+
+extension Process: Processable {}

Library/Sources/Internal/Extensions/URL+Extensions.swift

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+import Foundation
+
+extension URL {
+    
+    // MARK: Initialisers
+    
+    init(at filePath: String) {
+        if #available(macOS 13.0, *) {
+            self = URL(filePath: filePath)
+        } else {
+            self = URL(fileURLWithPath: filePath)
+        }
+    }
+    
+    // MARK: Computed
+    
+    var pathString: String {
+        if #available(macOS 13.0, *) {
+            path(percentEncoded: true)
+        } else {
+            path
+        }
+    }
+    
+    // MARK: Functions
+    
+    func appendingPath(_ path: String) -> URL {
+        if #available(macOS 13.0, *) {
+            appending(path: path)
+        } else {
+            appendingPathComponent(path)
+        }
+    }
+    
+}