Major refractor

- Add regex search and replace
- Add chunk iterator + update line iterator.
- Cleanup/formatting.

include/vase/buffer/original.h

@@ -9,21 +9,9 @@ struct OriginalBuffer : Buffer {
   std::vector<uint32_t> newlines;
 
   // TODO: replace with file io or even lazy loaded file io for large files/logs etc. later.
-  OriginalBuffer(char *buf, uint32_t length) : buf(buf), length(length) {
-    const char *p = buf;
-    const char *end = buf + length;
-    while (p < end) {
-      p = (const char *)memchr(p, '\n', end - p);
-      if (!p)
-        break;
-      newlines.push_back(uint32_t(p - buf));
-      p++;
-    }
-  }
+  OriginalBuffer(char *buf, uint32_t length);
 
-  ~OriginalBuffer() {
-    free(buf);
-  }
+  ~OriginalBuffer();
 
   const char *read(uint32_t pos, uint32_t *out_len);
   uint32_t count_lines(uint32_t pos, uint32_t length);