Fix various bugs across kernel module, CI, scripts and Python package

[VVAT3R]

Summary of fixes

Kernel module:

• Makefile: Use correct variable for `depmod` (was using undefined)
• dkms.conf: Replace DKMS_VERSION placeholder with real version 1.0.0

Python package:

• setup.cfg: Fix PyQT6 → PyQt6 (wrong casing breaks pip resolution)

Scripts:

• fan_control.sh: Remove hardcoded author home path; use legion_cli from PATH instead
• test_kernel_reload.sh: Remove spurious #!/bin/bash embedded inside the for loop

CI:

• build.yml, build_PR.yml, manual_test.yaml: Fix test_kenel → test_kernel typo (references non-existent file)
• extra.yaml: Add missing colon to workflow_dispatch trigger

Other:

• Rename .github/ pull_request_template.md → .github/pull_request_template.md (leading space prevented GitHub from recognizing it)