Support "Channel access token v2.1"

[yingtung]

• implement new functions issue_channel_access_token_v2_1, revoke_channel_access_token_v2_1, get_channel_access_tokens_v2_1 in linebot/api.py

• implement a new response IssueChannelTokenResponseV2 and ChannelAccessTokens in linebot/models/responses.py

Closes #254

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✅ yingtung
❌ chloechen

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[louis70109]

Thanks @yingtung for developing, will check this PR.

If anyone has some comment, please let us know. :)

[louis70109]

@yingtung Everything is good for us.
Could you implement the following two Channel Access APIs to make SDK perfect?

• Verify the validity of the channel access token v2.1
• Get all valid channel access token key IDs v2.1

[yingtung]

@louis70109 I implemented these two apis
Verify the validity of the channel access token v2.1
Get all valid channel access token key IDs v2.1
Please check this pr again, thanks.

[louis70109]

Hi @yingtung.

Ummm, I didn't find them on Files changed page.
Do you forget to push commit?

• GET https://api.line.me/oauth2/v2.1/verify
• GET https://api.line.me/oauth2/v2.1/tokens/kid

[yingtung]

hi @louis70109 , sorry for my mistake.
I have pushed the new commit.

[louis70109]

LGTM. 🤩