feat: add edit, delete time entry and date filter for list

[CorrectRoadH]

Adds three new commands for managing time entries.

Edit a time entry

# Edit the currently running entry
toggl edit --description "New description"
toggl edit --project "My Project"
toggl edit --tags "dev meeting"

# Edit a specific entry by ID
toggl edit 4315772069 --description "Updated description"
toggl edit 4315772069 --project "Other Project" --tags "review"

# Remove project (pass empty string)
toggl edit 4315772069 --project ""

# Clear all tags (pass empty string)
toggl edit 4315772069 --tags ""

Delete a time entry

toggl delete 4315772069

Filter list by date range

# Entries from a specific day
toggl list --since 2026-03-01 --until 2026-03-01

# Entries from a date range
toggl list --since 2026-03-01 --until 2026-03-05

# Combine with --json and --number
toggl list --since 2026-03-01 --json
toggl list --since 2026-03-01 -n 5

[CorrectRoadH]

@shantanuraj PTAL. I've tested this locally and everything works as expected.