dev@locazia: add blockchain routes, edit resolve content system to cid class, add web2 docs

app/core/_utils/resolve_content.py

@@ -0,0 +1,9 @@
+from app.core.content.content_id import ContentId
+
+
+def resolve_content(content_id):  # -> [content, error]
+    try:
+        return ContentId.deserialize(content_id), None
+    except BaseException as e:
+        return None, f"{e}"
+

app/core/_utils/string_binary.py

@@ -0,0 +1,11 @@
+
+def string_to_bytes_fixed_size(src: str, size: int, encoding='utf-8') -> bytes:
+    assert type(src) is str, "src must be a string"
+    src_bin = src.encode(encoding)
+    assert len(src_bin) <= size, "src is too long"
+    return src_bin + b'\x00' * (size - len(src_bin))
+
+
+def bytes_to_string(src: bytes, encoding='utf-8') -> str:
+    assert type(src) is bytes, "src must be bytes"
+    return src.decode(encoding).rstrip('\x00')