Compress fonts and add Oswald font

src/lib/gzip_decompressor.hpp

@@ -0,0 +1,49 @@
+#pragma once
+
+#include "rom/miniz.h"
+#include <Arduino.h>
+
+class GzipDecompressor {
+public:
+    static bool decompressData(const uint8_t* input, size_t inputSize, 
+                             uint8_t* output, size_t* outputSize) {
+        if (!input || !output || !outputSize || inputSize < 18) { // Minimum gzip size
+            return false;
+        }
+
+        tinfl_decompressor* decomp = new tinfl_decompressor;
+        if (!decomp) {
+            return false;
+        }
+
+        tinfl_init(decomp);
+        
+        size_t inPos = 10; // Skip gzip header
+        size_t outPos = 0;
+        
+        while (inPos < inputSize - 8) { // -8 for footer
+            size_t inBytes = inputSize - inPos - 8;
+            size_t outBytes = *outputSize - outPos;
+            
+            tinfl_status status = tinfl_decompress(decomp,
+                &input[inPos], &inBytes,
+                output, &output[outPos], &outBytes,
+                TINFL_FLAG_HAS_MORE_INPUT | TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF);
+
+            inPos += inBytes;
+            outPos += outBytes;
+
+            if (status == TINFL_STATUS_DONE) {
+                *outputSize = outPos;
+                delete decomp;
+                return true;
+            } else if (status < 0) {
+                delete decomp;
+                return false;
+            }
+        }
+        
+        delete decomp;
+        return false;
+    }
+};