chore(doc): auto generate docs

refactor: reorder role first in prompts

Change the structure of COPILOT_EXPLAIN and COPILOT_REVIEW prompts to
lead with the role description before adding the base instructions. This
makes the AI's role more prominent in the prompt and potentially
improves response quality.

refactor: move embedding cache to context module

Move embedding cache functionality from client to context module to improve
separation of concerns and code organization. The cache is now maintained in
the context module which is more appropriate since it deals with context
management.

This change simplifies the client module by removing the embedding cache
responsibility while maintaining the same caching functionality in a more
logical location.

Signed-off-by: Tomas Slusny <slusnucky@gmail.com>

docs: add unlimitedsola as a contributor for doc, and code (CopilotC-…

…Nvim#803)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

feat: Report early stop reason to the UI

The Copilot API returns a `finish_reason` field that indicates why the
response stopped. This commit adds this information to the UI, so the
user knows why the response stopped.

If the reason is `stop`, it means that the response was finished normally,
so we don't need to show any message.

chore(doc): auto generate docs

chore(doc): auto generate docs

docs: add abdennourzahaf as a contributor for doc (CopilotC-Nvim#689)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

fix: correct chat config handling

When opening chat and asking questions, ensure proper config inheritance
by deep extending chat state config with provided config and global config.
Also move config handling before early returns to maintain consistency.

Closes CopilotC-Nvim#676

Signed-off-by: Tomas Slusny <slusnucky@gmail.com>

chore(doc): auto generate docs