develop: Develop Guide Python Examples - English Edition

[Icemap]

What is changed, added or deleted? (Required)

Translate from: pingcap/docs-cn#12046

• Add Python drivers and ORMs in dev-guide-choose-driver-or-orm.md and dev-guide-third-party-support.md.
• Add Python samples in delete-data, insert-data, and trasnsaction
• Delete two legacy docs: SQLAlchemy and mysql-connector-python.
• Update the Example Applications in TOC to maintain these program languages in an ascending order.

Which TiDB version(s) do your changes apply to? (Required)

Tips for choosing the affected version(s):

By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.

For details, see tips for choosing the affected versions.

• master (the latest development version)
• v6.6 (TiDB 6.6 versions)
• v6.5 (TiDB 6.5 versions)
• v6.4 (TiDB 6.4 versions)
• v6.1 (TiDB 6.1 versions)
• v5.4 (TiDB 5.4 versions)
• v5.3 (TiDB 5.3 versions)
• v5.2 (TiDB 5.2 versions)
• v5.1 (TiDB 5.1 versions)
• v5.0 (TiDB 5.0 versions)

What is the related PR or file link(s)?

• This PR is translated from: Develop Guide Python Examples docs-cn#12046
• Other reference link(s):

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• Oreoxmt
• qiancai

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[Oreoxmt]

Rest LGTM

[qiancai]

LGTM

[Oreoxmt]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 66d9d6c

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.4: #12995.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #12996.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.6: #12997.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.1: #12998.