Update most references of vector-im to element-hq

[pixlwave]

Ignoring code comments as the codebase is old and redirects exist. Might be some Sonarcloud updates to follow.

Notable changes include fixes for issue automation.

[sonarcloud[bot]]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (4990fda) 12.38% compared to head (09f088f) 12.24%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #7725 +/- ## =========================================== - Coverage 12.38% 12.24% -0.15% =========================================== Files 1650 1650 Lines 163918 163918 Branches 66406 66390 -16 =========================================== - Hits 20309 20066 -243 - Misses 142941 143204 +263 + Partials 668 648 -20 ``` | [Flag](https://app.codecov.io/gh/element-hq/element-ios/pull/7725/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=element-hq) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/element-hq/element-ios/pull/7725/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=element-hq) | `6.07% <ø> (-0.15%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=element-hq#carryforward-flags-in-the-pull-request-comment) to find out more.

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