Enhancement on stock.get_quote_history API

[allen-li1231]

Resolves #128

This PR enhanced stock.get_quote_history API with the following aspects:

• Exact symbol match.
• Add MarketType enum for searching stock symbol on specified stock market.
• Expose toggling on cached EastMoney stock id.
• Enrich corresponding comments.

Feature examples:

import efinance as ef

ef.stock.get_quote_history("PG")
# unexpectedly returns AAPL's stock history

# get history of stock, whose symbol exactly matches "PG"
ef.stock.get_quote_history("PG", quote_symbol_mode=True, use_id_cache=False)  # do not use cache as it will still matches AAPL
# Correctly returns P&G stock history

# fuzzy search "PG" in A stock market
ef.stock.get_quote_history("PG", market_type=ef.utils.MarketType.A_stock, use_id_cache=False)
# returns 平高电气 stock history

# exact search "PG" in A stock market
ef.stock.get_quote_history("PG", market_type=ef.utils.MarketType.A_stock, quote_symbol_mode=True, use_id_cache=False)
# returns empty dataframe as none matches in reality

[allen-li1231]

@Micro-sheep Let me know if there is any advice or improvements as this is my first pr.

[Micro-sheep]

@Micro-sheep Let me know if there is any advice or improvements as this is my first pr.

I will be reviewing the code in the next two week.

[allen-li1231]

Improved code as suggested.