add AES_CBC to crypto module of Berry

[Staars]

Description:

Adds CBC mode to AES crypto functions in Berry (needed for Tuya BLE).
Follows the naming conventions of 'encrypt1' and 'decrypt1' of the CCM mode.
Not active by default, activate with -DUSE_BERRY_CRYPTO_AES_CBC=1 in build env.
Test example:

var b = bytes().fromstring("hello world_____") # 16-byte aligned
var key = bytes().fromstring("1122334455667788") # 16 bytes
var iv = bytes().fromstring("8877665544332211") # 16 bytes

print("data:",b.asstring())
import crypto
aes = crypto.AES_CBC()
aes.encrypt1(key, iv, b)
print("cipher:",b)
iv = bytes().fromstring("8877665544332211")
aes.decrypt1(key, iv, b)
print("decrypted data:",b.asstring())

Test with comparable Python example:

from Crypto.Cipher import AES
import binascii

def decrypt(data, iv, key):
    cipher = AES.new(key, AES.MODE_CBC, iv)
    return cipher.decrypt(data)


def encrypt(data, iv, key):
    cipher = AES.new(key, AES.MODE_CBC, iv)
    return cipher.encrypt(data)

data = "hello world_____".encode('utf-8') # "padded" with __ to 16 byte
key = "1122334455667788".encode('utf-8') # 16-byte
iv = "8877665544332211".encode('utf-8')  # 16-byte

print(data)
cipher = encrypt(data,iv,key)
print(binascii.hexlify(cipher))
decrypted = decrypt(cipher,iv,key)
print(decrypted)

Checklist:

• The pull request is done against the latest development branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works with Tasmota core ESP8266 V.2.7.4.9
• The code change is tested and works with Tasmota core ESP32 V.2.0.14
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass