Python .pyi file example for type hints/editor completion (kaspanet#72)

* Feat: adding pyi file and testing first commit

* Feat: Added py interface file

* fix python IDE autocompletion and imports

python/examples/addresses.py

@@ -1,13 +1,12 @@
-from kaspa import (
-    PrivateKey, 
-)
+from kaspa import PrivateKey
 
 if __name__ == "__main__":
-    private_key = PrivateKey('b7e151628aed2a6abf7158809cf4f3c762e7160f38b4da56a784d9045190cfef')
+    private_key = PrivateKey(
+        'b7e151628aed2a6abf7158809cf4f3c762e7160f38b4da56a784d9045190cfef')
     print(f'Private Key: {private_key.to_hex()}')
 
     public_key = private_key.to_public_key()
     print(f'Public Key: {public_key.to_string_impl()}')
 
     address = public_key.to_address('mainnet')
-    print(f'Address: {address.address_to_string()}')
+    print(f'Address: {address.address_to_string()}')

python/kaspa.pyi

@@ -0,0 +1,62 @@
+
+class Address:
+
+    def __init__(self, address: str) -> None: ...
+
+    def to_string(self) -> str: ...
+
+    def version(self) -> str: ...
+
+    def set_prefix(self, prefix: str) -> None: ...
+
+    def payload(self) -> str: ...
+
+    @staticmethod
+    def validate(address: str) -> bool: ...
+
+
+class PrivateKeyGenerator:
+
+    def __init__(self, xprv: str, is_multisig: bool,
+                 account_index: int, cosigner_index: int) -> str: ...
+
+    def receive_key(self, index: int) -> PrivateKey: ...
+
+    def change_key(self, index: int) -> PrivateKey: ...
+
+
+class PrivateKey:
+
+    def __init__(self, secret_key: str) -> None: ...
+
+    def to_string(self) -> str: ...
+
+    def to_public_key(self) -> PublicKey: ...
+
+    def to_address(self, network: str) -> Address: ...
+
+    def to_address_ecdsa(self, network: str) -> Address: ...
+
+    @staticmethod
+    def try_new(key: str) -> PrivateKey: ...
+
+
+class PublicKey:
+    def __init__(self, key: str) -> None: ...
+
+    def to_string(self) -> str: ...
+
+    def to_address(self, network: str) -> Address: ...
+
+    def to_address_ecdsa(self, network: str) -> Address: ...
+
+
+class RpcClient:
+
+    def __init__(self, url: str) -> None: ...
+
+    def is_connected(self) -> bool: ...
+
+    def connect(self) -> None: ...
+
+    def disconnect(self) -> None: ...