feat: handle output section header start addresses in linker scripts

[plasmaDestroyer]

This PR adds support for output section headers that specify a numeric start address between the section name and : in linker scripts, such as __ksymtab 0 : ALIGN(8) { ... }.

It parses and stores that header value, lowers numeric expressions into the existing section location path during linker-script processing, and adds parser and integration test coverage for the new syntax.

Closes #1660.

[lapla-cogito]

Thanks, looks good. Could you also update this line in LINKER_SCRIPT_SUPPORT.md? The current implementation only supports numeric literals (which isn't problematic for merging), so "partial" status would be appropriate.

[lapla-cogito]

It's good to note that only numeric literals are supported in the notes section. (i.e. When the status is "partial," it's not immediately obvious what makes it partial in general.)

[lapla-cogito]

Additionally, this change involves modifying numerous lines in LINKER_SCRIPT_SUPPORT.md. Since these changes may conflict with other currently submitted PRs related to linker script support, please minimize the number of modified lines. In this case, for the documentation, a single line change should suffice.

[plasmaDestroyer]

Additionally, this change involves modifying numerous lines in LINKER_SCRIPT_SUPPORT.md.

yeah, my bad, my ide had auto formatting on and i didnt realize. fixed it now.

[lapla-cogito]

Thanks!