Killing more inconsistencies through type hints

[hugsy]

Description

This PR is purely esthetic but fixes a few extra inconsistencies thanks to type hints, using pylint and pylance.

Among other fixes:

• removed unused vars
• f-string-ify more
• enforce (using assert) expected type to variable when appropriate
• fixed some bad type names in gdb.events.*

With this PR :

• pylint on gef and tests/*.py shows a 10/10 score

• pylance shows some minor warnings and infos

Checklist

• [x] My code follows the code style of this project.
• [x] My change includes a change to the documentation, if required.
• [x] If my change adds new code, adequate tests have been added.
• [x] I have read and agree to the CONTRIBUTING document.

[github-actions[bot]]

🤖 Coverage update for 1c3504e239b39eada3f0153fa4e0c86b5f51f242 🔴

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	1c3504e239b39eada3f0153fa4e0c86b5f51f242
Score	71.7764%	71.6686% (-0.1078)

[github-actions[bot]]

🤖 Coverage update for 1c3504e239b39eada3f0153fa4e0c86b5f51f242 🟢

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	1c3504e239b39eada3f0153fa4e0c86b5f51f242
Score	71.7764%	71.7959% (0.0195)

[github-actions[bot]]

🤖 Coverage update for e0c15b14eb5e1c62ac501e10065d1b7ecf8da145 🔴

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	e0c15b14eb5e1c62ac501e10065d1b7ecf8da145
Score	71.7764%	71.6547% (-0.1217)

[github-actions[bot]]

🤖 Coverage update for e0c15b14eb5e1c62ac501e10065d1b7ecf8da145 🟢

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	e0c15b14eb5e1c62ac501e10065d1b7ecf8da145
Score	71.7764%	71.7764% (0)

[github-actions[bot]]

🤖 Coverage update for 0b6ad3b11d299c29adc7f3d4869488cff72d2529 🔴

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	0b6ad3b11d299c29adc7f3d4869488cff72d2529
Score	71.7764%	71.5865% (-0.1899)

[github-actions[bot]]

🤖 Coverage update for 0b6ad3b11d299c29adc7f3d4869488cff72d2529 🟢

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	0b6ad3b11d299c29adc7f3d4869488cff72d2529
Score	71.7764%	71.7764% (0)

[github-actions[bot]]

🤖 Coverage update for 45caca712a81c68ca9c0c808dfc6579be6edd5be 🔴

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	45caca712a81c68ca9c0c808dfc6579be6edd5be
Score	71.7764%	71.5893% (-0.1871)

[github-actions[bot]]

🤖 Coverage update for 45caca712a81c68ca9c0c808dfc6579be6edd5be 🟢

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	45caca712a81c68ca9c0c808dfc6579be6edd5be
Score	71.7764%	71.7764% (0)

[github-actions[bot]]

🤖 Coverage update for 2b11d8376fbd3da243eb2055f81cd3bb3592669d 🟢

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	2b11d8376fbd3da243eb2055f81cd3bb3592669d
Score	71.7764%	71.7959% (0.0195)

[github-actions[bot]]

🤖 Coverage update for 2b11d8376fbd3da243eb2055f81cd3bb3592669d 🔴

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	2b11d8376fbd3da243eb2055f81cd3bb3592669d
Score	71.7764%	71.5623% (-0.2141)

[github-actions[bot]]

🤖 Coverage update for 0d9091247326dfc8e8f5536495642d93643d5eb9 🔴

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	0d9091247326dfc8e8f5536495642d93643d5eb9
Score	71.7569%	71.5623% (-0.1946)

[github-actions[bot]]

🤖 Coverage update for 0d9091247326dfc8e8f5536495642d93643d5eb9 🟢

	Old	New
Commit	219d46fedcf3859a5509ef2ccacd3396dab28768	0d9091247326dfc8e8f5536495642d93643d5eb9
Score	71.7569%	71.8153% (0.0584)